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Differentials and their integrals - how to visualize?
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V.Gopal  
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 More options Sep 10 2002, 8:26 am
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 9 Sep 2002 19:56:23 -0700
Local: Tues, Sep 10 2002 8:26 am
Subject: Differentials and their integrals - how to visualize?
If dX=F(X) and X=F(dX) then it means at all magnitudes of a thing (X),
the thing (X) is an element of itself (X). That is, irrespective of
number, a set of potatoes is 'a' potatoe. In this case, in oeder to
quantify X we have to use a fixed quantum of X and if integral dX=X
then X is the number of quanta. If we do not quantify X in terms of
number of quanta then integral of dX is 1.
The problem arises when dX=F(X) but X is not the function of dX. In
this case integral of dX must occupy either space (like a
gravitational field or a magnetic field) or it must occupy time (like
natural radio active decay) and any number of successive
differentiation of the integral of X [when dX=F(X)but
X is not the function of dX] will not produce a constant. Here
integral of dX is not a number. Here X decreases or increases
exponentially. Exponential increase is like chain reaction - increase
increases, and, exponential decreases means decreases decreases.
Continuous increase in decreases cannot make the value negative
because the activity is like an implosion - either it must stop by
itself without any external cause, or it should become a black-hole -
dark areas of our knowledge.
I am unable to imagine any real number which a mathematician can
integrate as well as differentiate at his will. Can anybody help me?

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Duran Castore  
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 More options Sep 11 2002, 6:25 am
Newsgroups: sci.math
From: Duran Castore <duran_cast...@yahoo.com>
Date: 11 Sep 2002 00:55:04 GMT
Local: Wed, Sep 11 2002 6:25 am
Subject: Re: Differentials and their integrals - how to visualize?
vgopa...@rediffmail.com (V.Gopal) wrote in
news:38af3945.0209091856.56bc3a2b@posting.google.com:

> If dX=F(X) and X=F(dX) then it means at all magnitudes of a thing (X),
> the thing (X) is an element of itself (X). That is, irrespective of
> number, a set of potatoes is 'a' potatoe.

X is a variable, not a set. So, saying "X is an element of X" just
doesn't make sense.

BTW, what do you mean by dX? Differential? With respect to what?

> In this case, in oeder to
> quantify X we have to use a fixed quantum of X and if integral dX=X
> then X is the number of quanta. If we do not quantify X in terms of
> number of quanta then integral of dX is 1.
> The problem arises when dX=F(X) but X is not the function of dX.

What is the function, and what is the variable? I was under the
impression that F() is a function, X is a variable, and dX is just a
integration symbol. Please explain.

<snip>

> I am unable to imagine any real number which a mathematician can
> integrate as well as differentiate at his will. Can anybody help me?

Numbers can't be differentiated or integrated; functions can.

Please check your calculus knowledge.

--
---------------------------------------
Duran Castore (duran_cast...@yahoo.com)


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V.Gopal  
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 More options Sep 11 2002, 8:54 pm
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 11 Sep 2002 08:24:24 -0700
Local: Wed, Sep 11 2002 8:54 pm
Subject: Re: Differentials and their integrals - how to visualize?

I wish to know whether the 'process' of integration has contiguity in
space or in time or at least in our mind. Whether the process of
integration must be in one direction in time (and space) or
integration can proceed in a chaotic manner in all directions in space
and by changing directions in time. If integration has to have
contiguity and direction (like acceleration)then the process of
integratin is irreversible and we cannot put the process of
'integration' in the reverse gear and  find the differential from its
integral. If we are NOT integrating or differentiating 'number' then
we must be
integrating 'functions'. I cannot understand what purpose mathematical
symbols (+, -, / and x) can serve in the process of integration of
functions. Integration is useful in geometry in the calculation of
area and volume but the calculation is irreversible. I can not imagine
a reversible integration of functions, other than mechanical functions
- motion of interconnected parts.

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Duran Castore  
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 More options Sep 13 2002, 6:42 am
Newsgroups: sci.math
From: Duran Castore <duran_cast...@yahoo.com>
Date: 13 Sep 2002 01:02:25 GMT
Local: Fri, Sep 13 2002 6:32 am
Subject: Re: Differentials and their integrals - how to visualize?
vgopa...@rediffmail.com (V.Gopal) wrote in
news:38af3945.0209110724.c2a9b52@posting.google.com:

> Duran Castore <duran_cast...@yahoo.com> wrote in message
> <news:Xns9285DEBE7B9D5durancastoreyahoocom@130.133.1.4>...
>> vgopa...@rediffmail.com (V.Gopal) wrote in
>> news:38af3945.0209091856.56bc3a2b@posting.google.com:

<snip>
> I wish to know whether the 'process' of integration has contiguity in
> space or in time or at least in our mind. Whether the process of
> integration must be in one direction in time (and space) or
> integration can proceed in a chaotic manner in all directions in space
> and by changing directions in time.

What do you mean by "contiguity"?

As far as I know, the only direction which has something to do with
integration is the one of the values of the independent variable of the
function being integrated. Example:

integral [0 to 1] x dx = 1/2

The integration goes from x varying from 0 to 1. If it's done from 1 to 0
instead, the result is -1/2.

> If integration has to have
> contiguity and direction (like acceleration)then the process of
> integratin is irreversible and we cannot put the process of
> 'integration' in the reverse gear and  find the differential from its
> integral.

Do you know the difference between definite integral and indefinite
integral? If not, please check a Calculus book.

Please check the Fundamental Theorem of Calculus, at

http://www.math.unl.edu/~webnotes/classes/class52/class52.htm
with a proof provided at
http://www.math.unl.edu/~webnotes/classes/class52/thm811.htm

> If we are NOT integrating or differentiating 'number' then
> we must be
> integrating 'functions'. I cannot understand what purpose mathematical
> symbols (+, -, / and x) can serve in the process of integration of
> functions.

They are used, as operators which they are, to write the functions'
formulas.

> Integration is useful in geometry in the calculation of
> area and volume but the calculation is irreversible. I can not imagine
> a reversible integration of functions, other than mechanical functions
> - motion of interconnected parts.

"Irreversible" in what sense? One can calculate the value of a definite
integral, if such value exists, and it's clearly impossible to return to
the original funcion based only in one numeric result. Now, indefinite
integrals yield a function as a result, and such function can be
differentiated, and the result is the original function.

Hope this is clearer now,

--
---------------------------------------
Duran Castore (duran_cast...@yahoo.com)


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V.Gopal  
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 More options Sep 13 2002, 10:03 pm
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 13 Sep 2002 09:33:49 -0700
Local: Fri, Sep 13 2002 10:03 pm
Subject: Re: Differentials and their integrals - how to visualize?

You say: Integration goes from x varying continuously from 1 to 0.
This integration is irreversible if there is continuity from 1 to 0,
because then we cannot have a definite integral of 1/x when x varies
from 1 to 0. When X varies from 1 to 0, 1/x varies continuously from 1
to infinity. In this case can we prove that x*1/x=1? That is, can we
prove that number of numbers between 1 and 0 is same as that between 1
and infinity?
I believe that we can only integrate functions of fields.
Irreversibility implies that there is a continuous change is
reference, continuous forgetting of the past and some times past is
continuously falsified by the present during the process of
integration. Any idea that has contiguity and direction (like 0 to 1)
is irreversible.

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Duran Castore  
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 More options Sep 14 2002, 1:48 am
Newsgroups: sci.math
From: Duran Castore <duran_cast...@yahoo.com>
Date: 13 Sep 2002 20:18:15 GMT
Local: Sat, Sep 14 2002 1:48 am
Subject: Re: Differentials and their integrals - how to visualize?
vgopa...@rediffmail.com (V.Gopal) wrote in
news:38af3945.0209130833.525e6c9d@posting.google.com:

<snip>

Please don't ignore my questions.

> You say: Integration goes from x varying continuously from 1 to 0.

Or 0 to 1, or a to b, where a and b are real numbers. Definite integral,
that is.

> This integration is irreversible if there is continuity from 1 to 0,
> because then we cannot have a definite integral of 1/x when x varies
> from 1 to 0.

Non-sequitur; f(x) = 1/x is not continuous at x=0. But one can integrate
f(x) = 1/x in the interval [e,1], e > 0, e arbitrarily small.

> When X varies from 1 to 0, 1/x varies continuously from 1
> to infinity. In this case can we prove that x*1/x=1?

x*1/x = 1 due to properties of real numbers (1 is the multiplicative
identity in R). Nothing to do with the function f(x) = 1/x.

> That is, can we
> prove that number of numbers between 1 and 0 is same as that between 1
> and infinity?

Yes. One can find easily a bijection between the intervals A=]0,1] and B=
[1,oo[. It is, not surprisingly, f:A -> B, f(x) = 1/x (x in A). One of
the intervals is just taken in reversed order.

> I believe that we can only integrate functions of fields.

Please clarify: what you mean by "field"?

> Irreversibility implies that there is a continuous change is
> reference, continuous forgetting of the past and some times past is
> continuously falsified by the present during the process of
> integration. Any idea that has contiguity and direction (like 0 to 1)
> is irreversible.

You aren't making sense. Integration of functions has nothing to do with
time at all; even if one integration variable is time, the _process_ of
integration does not depend on time.

As an aside: I saw, in my mail inbox, a huge Word document, whose style
is suspiciouly similar to yours. Please refrain from sending such long e-
mails to me without my permission.

Bye for now,

--
---------------------------------------
Duran Castore (duran_cast...@yahoo.com)


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Shmuel (Seymour J.) Metz  
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 More options Sep 15 2002, 6:55 am
Newsgroups: sci.math
From: "Shmuel (Seymour J.) Metz" <spamt...@library.lspace.org.invalid>
Date: Sat, 14 Sep 2002 21:19:05 -0400
Local: Sun, Sep 15 2002 6:49 am
Subject: Re: Differentials and their integrals - how to visualize?
In <38af3945.0209110724.c2a9...@posting.google.com>, on 09/11/2002
   at 08:24 AM, vgopa...@rediffmail.com (V.Gopal) said:

>I wish to know whether the 'process' of integration has contiguity in
>space or in time or at least in our mind.

Is that supposed to mean something?

>Whether the process of
>integration must be in one direction in time (and space) or
>integration can proceed in a chaotic manner in all directions in
>space and by changing directions in time.

Integration is a mathematical operation; it is not a physical process
in space-time. The term "integration" covers several concepts, some of
which refer to 1-1 mappings and some of which don't.

>I cannot understand what purpose mathematical
>symbols (+, -, / and x) can serve in the process of integration of
>functions.

 1. Defining what we mean by integration

 2. Defining a function that we would like to integrate

>I can not imagine
>a reversible integration of functions, other than mechanical
>functions - motion of interconnected parts.

Fourier.

--
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     Atid/2, Team OS/2, Team PL/I

Any unsolicited commercial junk E-mail will be subject to legal
action.  I reserve the right to publicly post or ridicule any
abusive E-mail.

I mangled my E-mail address to foil automated spammers; reply to
domain Patriot dot net user shmuel+news to contact me.  Do not
reply to spamt...@library.lspace.org


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V.Gopal  
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 More options Sep 17 2002, 10:01 am
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 16 Sep 2002 21:31:53 -0700
Local: Tues, Sep 17 2002 10:01 am
Subject: Re: Differentials and their integrals - how to visualize?
"Shmuel (Seymour J.) Metz" <spamt...@library.lspace.org.invalid> wrote in message <news:3d83e009$10$fuzhry+tra$mr2ice@news.patriot.net>...

Contiguity of functions: When we conceive an organisation with a goal
in mind we
'integrate functions' in our mind and then SUBSTITUTE ENTITIES FOR
FUNCTIONS. In this case we are able to explain how the organizational
goal is achived by 'an integration of functions of its parts'. In
mathematics an integral must be a continuum in space or in space-time.
The sum of series of numbers in arithmetic progression, or G.P or in
H.P is not an integral. We cannot expres or communicate (the
structure) of a continuum. Unform velocity is insensile and
incommunicable because it is like 'time without change'. In L/T we can
never prove that there is no change within T or within unit of time.
L/T is average velocity. Newton took the average of the average
velocities and called it 'acceleration' and assumed it to be a
constant! If time average of time averages is constant then it is an
endless 'time without change'. We can never express or convey
continuous change like acceleration or a state of change.
The whole structure of 'mathematics' is erected on a
self-contradictory or  paradoxical assumption:
Number of cycles per cycle is constant all the time in all
environments.
Number of units of time per unit time is constant all the
time----------.
Number of units of length per unit length is constant all the
time------.
Number of space-time intervals, of same duration, within any two
consecutive integers (0 and 1, 1 and 2, 2 and 3, 10^10 and (10^10)+1
is same and constant.
0, 1, 2, 3 ------------N, (N+1)------ are equally spaced.
Number of numbers between 0 and 1, 1 and 2, 2 and 3 or between N and N
+1 is same all the time. On a number line if integers are equally
spaced or if 'scale' is conventional then there is a pardox - X*1/X
cannot be equal to 1, because we have to accommodate the reciprocals
of all the conceivable numbers between 1 and infinity within all the
conceivable numbers between 1 and 0.
We can understand the problem with continuity from the following
example:
Suppose X and Y are two sides of a rectangle and the area of the
rectangle, given by XY is constant. When XY=constant, if X decreases
continuously Y should increase continuously. If X decreases
continuously at a constant speed 'S' (so that at the end of time T the
side is X-ST, then what is the rate at which Y increases? YOU WOULD
SAY that when X becomes 1/2, Y is double its original size.
But, can we correlate the RATE OF DECREASE IN X and RATE OF INCREASE
IN Y?
Here we have failed to (we cannot) demonstrate that X is continuously
decreasing within unit of time used specify speed S=L/unit time. As X
decreases, the increase in Y increases. X cannot reach zero within a
finite time (=X/S) because then we will know the 'exact time' when Y
would HAVE REACHED infinity. As X approaches 0 the INCREASE IN GAP
between the corresponding values of Y, INCREASES (Here increase
increases). Y increases as a function of itself - exponentially and
its rate of increase is inexpressible. If you say, 'when X becomes
half, Y is doubled' (or X/2*2Y or X/10*10Y or X/N*NY=constant) then
your statement does not correlate the rate of decrease in X with rate
of increase in Y. A continuous chnage in a number cannot be expressed
as function time or any other variable , it seems to take place
without any cause as a function of it-self on its own like
acceleration in gravity. If we want to describe the gravitational
field using particles called 'gravitons' then we have show how
functions of the 'gravitons' are integrated so that increase in
velocity is continuous in one direction in space-time.
I am ready to clear any more doubts about contiguity and continuity.

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Shmuel (Seymour J.) Metz  
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 More options Sep 18 2002, 12:51 am
Newsgroups: sci.math
From: "Shmuel (Seymour J.) Metz" <spamt...@library.lspace.org.invalid>
Date: Tue, 17 Sep 2002 12:07:11 -0400
Local: Tues, Sep 17 2002 9:37 pm
Subject: Re: Differentials and their integrals - how to visualize?
In <38af3945.0209162031.4dc8c...@posting.google.com>, on 09/16/2002
   at 09:31 PM, vgopa...@rediffmail.com (V.Gopal) said:

>Contiguity of functions: When we conceive an organisation with a goal
>in mind we
>'integrate functions' in our mind and then SUBSTITUTE ENTITIES FOR
>FUNCTIONS.

That sounds like you're not asking about Mathematics, but about
psychology. In Mathematics "integration" has a very different meaning.

>In
>mathematics an integral must be a continuum in space or in
>space-time.

No.

>The sum of series of numbers in arithmetic progression, or G.P or in
>H.P is not an integral.

I don't know what you mean by GP and HO, but the sum of a series of
number is most definitely an integral.

>We cannot expres or communicate (the
>structure) of a continuum.

Of course we can.

>Unform velocity is insensile and
>incommunicable because it is like 'time without change'.

"Uniform velocity" is a concept in Physics, not in Mathematics. But
the physical concept can be expressed in straightforward mathematical
language.

>In L/T we can
>never prove that there is no change within T or within unit of time.

I'm not sure what you are trying to say; it reads like a paraphrase of
Xeno, whose paradoxes did not stand up to close examination.

>Newton took the average of the average velocities

No.

>and assumed it to be a constant!

Likewise no. Otherwise F = m*A would not be meaningful.

>The whole structure of 'mathematics' is erected on a
>self-contradictory or  paradoxical assumption:

Why don't you learn some Mathematics before guessing as to what its
structure is?

>Number of cycles per cycle is constant all the time in all
>environments.

What do cycles and time have to do with Mathematics?

>Suppose X and Y are two sides of a rectangle and the area of the
>rectangle, given by XY is constant. When XY=constant, if X decreases
>continuously Y should increase continuously. If X decreases
>continuously at a constant speed 'S' (so that at the end of time T
>the side is X-ST, then what is the rate at which Y increases? YOU
>WOULD SAY that when X becomes 1/2, Y is double its original size.
>But, can we correlate the RATE OF DECREASE IN X and RATE OF INCREASE
>IN Y?

Yes. And, again, your subsequent text confuses Mathematics with
Physics and is Mathematically incorrect. Read up on conic sections,
hyperbolas and quadratic equations

--
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     Atid/2, Team OS/2, Team PL/I

Any unsolicited commercial junk E-mail will be subject to legal
action.  I reserve the right to publicly post or ridicule any
abusive E-mail.

I mangled my E-mail address to foil automated spammers; reply to
domain Patriot dot net user shmuel+news to contact me.  Do not
reply to spamt...@library.lspace.org


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Duran Castore  
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 More options Sep 18 2002, 2:41 am
Newsgroups: sci.math
From: Duran Castore <duran_cast...@yahoo.com>
Date: 17 Sep 2002 21:11:05 GMT
Local: Wed, Sep 18 2002 2:41 am
Subject: Re: Differentials and their integrals - how to visualize?
vgopa...@rediffmail.com (V.Gopal) wrote in
news:38af3945.0209162031.4dc8c6f2@posting.google.com:

> "Shmuel (Seymour J.) Metz" <spamt...@library.lspace.org.invalid> wrote
> in message <news:3d83e009$10$fuzhry+tra$mr2ice@news.patriot.net>...
>> In <38af3945.0209110724.c2a9...@posting.google.com>, on 09/11/2002
>>    at 08:24 AM, vgopa...@rediffmail.com (V.Gopal) said:

>> >I wish to know whether the 'process' of integration has contiguity
>> >in space or in time or at least in our mind.

>> Is that supposed to mean something?

<snip>

> Contiguity of functions: When we conceive an organisation with a goal
> in mind we
> 'integrate functions' in our mind and then SUBSTITUTE ENTITIES FOR
> FUNCTIONS. In this case we are able to explain how the organizational
> goal is achived by 'an integration of functions of its parts'.

What type of "organization" you have in mind? Note that "integration", in
the sense of "gathering resources together", is entirely different of
"integration" of functions, in the mathematical sense.

> In
> mathematics an integral must be a continuum in space or in space-time.

Nope. "An integral must be a continuum" does not make sense at all. And
most integrals don't have any physical meaning, nor are done in space or
space-time.

> The sum of series of numbers in arithmetic progression, or G.P or in
> H.P is not an integral. We cannot expres or communicate (the
> structure) of a continuum.

The only continuum I know is the cardinality of the real set. Please see
http://mathworld.wolfram.com/Continuum.html
for more. So, the continuum is perfectly explainable.

> Unform velocity is insensile and
> incommunicable because it is like 'time without change'. In L/T we can
> never prove that there is no change within T or within unit of time.
> L/T is average velocity.

You are making almost no sense here. One can assume, in some model of a
physical phenomenon, that the speed of an certain object is constant (or
"uniform", if you like it). What is "incommunicable" about it?

> Newton took the average of the average
> velocities and called it 'acceleration' and assumed it to be a
> constant! If time average of time averages is constant then it is an
> endless 'time without change'. We can never express or convey
> continuous change like acceleration or a state of change.

Two errors: 1) The acceleration, as a function of time, is the second
derivative of the space function, not an "average of averages". 2) "time
average" does not make sense, since no one is deriving time as function of
itself when calculating velocity or acceleration.

> The whole structure of 'mathematics' is erected on a
> self-contradictory or  paradoxical assumption:
> Number of cycles per cycle is constant all the time in all
> environments.
> Number of units of time per unit time is constant all the
> time----------.
> Number of units of length per unit length is constant all the
> time------.
> Number of space-time intervals, of same duration, within any two
> consecutive integers (0 and 1, 1 and 2, 2 and 3, 10^10 and (10^10)+1
> is same and constant.
> 0, 1, 2, 3 ------------N, (N+1)------ are equally spaced.
> Number of numbers between 0 and 1, 1 and 2, 2 and 3 or between N and N
> +1 is same all the time.

"Number of <fitb> per <fitb> is constant" appears to be a truism, when it
makes sense.

There are not "space-time" intervals between integers, or any other
numbers. There are just intervals, abstract, with no relation to physics.

Please check your facts. I strongly suggest to you to study abstract
algebra and real analysis before making such claims about the structure of
mathematics. Below are some references to begin studying:

Algebra
http://www.csee.umbc.edu/~squire/reference/group_def.shtml
http://www.math.uiuc.edu/~r-ash/
http://www.math.miami.edu/~ec/book/
http://www.math.niu.edu/~beachy/aaol/
http://www.math.niu.edu/~beachy/abstract_algebra/study_guide/

Set Theory and Real Analysis
http://www.math.louisville.edu/~lee/RealAnalysis/realanalysis.html
http://www.shu.edu/projects/reals/index.html
http://www.math.unl.edu/~webnotes/contents/contents.htm

Dimensional Analysis
http://www.physics.uoguelph.ca/tutorials/dimanaly/

Encyclopedia
http://mathworld.wolfram.com/

> On a number line if integers are equally
> spaced or if 'scale' is conventional then there is a pardox - X*1/X
> cannot be equal to 1, because we have to accommodate the reciprocals
> of all the conceivable numbers between 1 and infinity within all the
> conceivable numbers between 1 and 0.

As I said in another message, there is no paradox - both intervals [1, oo[
and ]0,1] are infinite and of the same cardinality.

> We can understand the problem with continuity from the following
> example:
> Suppose X and Y are two sides of a rectangle and the area of the
> rectangle, given by XY is constant. When XY=constant, if X decreases
> continuously Y should increase continuously. If X decreases
> continuously at a constant speed 'S' (so that at the end of time T the
> side is X-ST, then what is the rate at which Y increases? YOU WOULD
> SAY that when X becomes 1/2, Y is double its original size.
> But, can we correlate the RATE OF DECREASE IN X and RATE OF INCREASE
> IN Y?

The rate of change of y varies with x, s, and t, due to the constraints of
the problem: xy = A (constant). One can't prove any discontinuity in y or x
this way.

Rephrasing your problem:
Let x(t) = X - st be a linear function in t. X and s are constants.
Suppose A is a real constant > 0, and let be Y = A/X.
Let y(t) = A / x(t) be a function in t.

The answer to your questions above is: calculate the function dy/dt, and
evaluate it at value 1/2. dx/dt and dy/dt are related, just use the chain
rule in derivation. (dx/dt and dy/dt denote, at each point t, what is the
increasing/decreasing rate). I suppose you know Calculus fairly well.

> Here we have failed to (we cannot) demonstrate that X is continuously
> decreasing within unit of time used specify speed S=L/unit time. As X
> decreases, the increase in Y increases. X cannot reach zero within a
> finite time (=X/S) because then we will know the 'exact time' when Y
> would HAVE REACHED infinity. As X approaches 0 the INCREASE IN GAP
> between the corresponding values of Y, INCREASES (Here increase
> increases). Y increases as a function of itself - exponentially and
> its rate of increase is inexpressible.

x(0) = X, x(X/s) = 0. So, lim [t->(X/s)] y(t) = +oo. One can calculate
dy/dt(t) at any t < X/s.

What is "inexpressible" about this?

BTW, evaluations of a function do not take time to happen; time, when
needed, is just one more variable.

<snip irrelevant argument>

In case I didn't make myself clear before: mathematical entities do not
have physical meanings (like space or time) in themselves; they are
abstract. One can use math to create a model of the physical world, but the
math behind the model does not need to match the properties of the physical
world.

You failed in understanding all of above.

Bye for now,

--
---------------------------------------
Duran Castore (duran_cast...@yahoo.com)


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V.Gopal  
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 More options Sep 18 2002, 10:00 pm
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 18 Sep 2002 09:30:36 -0700
Local: Wed, Sep 18 2002 10:00 pm
Subject: Re: Differentials and their integrals - how to visualize?

It is wrong to say that no one is deriving time as a function if
itself.
When we want to express or convey angular acceleration (rate of change
of frequency) we have to express time as a function of itself. In
general, frequency means 'density'. In general, 'RATE' means number of
one thing within
each unit of another thing. Rate of change of frequency means rate of
change of density or even rate of change of rate. In general
'acceleration' means rate of change frequency or density or rate. A
unit of time is always equivalent a fixed displacement - angular or
linear. In order to avoid any confusion about the nature of time we
must replace 'unit' of time (the constant that we place in the
dinominator, to 'quantify' velocity) by a fixes angle or a fixed
length. Then velocity becomes L/l - displacement of the object in
question divided by the displacement in the clock showing unit time.
(Acceleration is rate of change of rate, both in mechanics and in
economics) A formula for 'Prediction' always demands that we express
the object (actually its state) as a function of itself (its original
state) and not include any knowledge without the object. In general
'acceleration' means rate of increase in the number of numbers within
unit or one. The graph showing the relation between linear
displacement (or number of units of length)or angular displacement (or
number of cycles) and time, during acceleration, cannot give a
continuous and smooth open curve. L=UT+1/2aT^2 cannot be a smooth open
curve. These graphs can be smooth only without the units of time and
length - the 'displacemet' to be measured and correlated with time,
elongates - the information we are seeking is changing!
If dL/dT is the 'instantaneous' velocity then what is its reciprocal
dT/dL?
Note that this expression is equivalent to infinite time divided
infinite distance.

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Duran Castore  
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 More options Sep 19 2002, 3:23 am
Newsgroups: sci.math
From: Duran Castore <duran_cast...@yahoo.com>
Date: 18 Sep 2002 21:52:35 GMT
Local: Thurs, Sep 19 2002 3:22 am
Subject: Re: Differentials and their integrals - how to visualize?
vgopa...@rediffmail.com (V.Gopal) wrote in
news:38af3945.0209180830.75c102d6@posting.google.com:

> Duran Castore <duran_cast...@yahoo.com> wrote in message
> <news:Xns928CB8A088685durancastoreyahoocom@130.133.1.4>...
>> vgopa...@rediffmail.com (V.Gopal) wrote in
>> news:38af3945.0209162031.4dc8c6f2@posting.google.com:

<snipping thru the context of the point you chose to debate>

>> > Newton took the average of the average
>> > velocities and called it 'acceleration' and assumed it to be a
>> > constant! If time average of time averages is constant then it is
>> > an endless 'time without change'. We can never express or convey
>> > continuous change like acceleration or a state of change.

>> Two errors: 1) The acceleration, as a function of time, is the second
>> derivative of the space function, not an "average of averages". 2)
>> "time average" does not make sense, since no one is deriving time as
>> function of itself when calculating velocity or acceleration.

<big snip>

> It is wrong to say that no one is deriving time as a function if
> itself.
> When we want to express or convey angular acceleration (rate of change
> of frequency) we have to express time as a function of itself. In

You are attacking the wrong argument; I was meaning linear acceleration.
"Straw man" fallacy.

> general, frequency means 'density'.

Nope. Density has unit kg/m^3; frequency has unit s^-1.

> In general, 'RATE' means number of one thing within
> each unit of another thing. Rate of change of frequency means rate of
> change of density or even rate of change of rate. In general
> 'acceleration' means rate of change frequency or density or rate.

Too vague.

> A unit of time is always equivalent [to] a fixed displacement - angular
> or linear.

If the (linear or angular) velocity is constant, that is.

> In order to avoid any confusion about the nature of time we
> must replace 'unit' of time (the constant that we place in the
> dinominator, to 'quantify' velocity) by a fixes angle or a fixed
> length. Then velocity becomes L/l - displacement of the object in
> question divided by the displacement in the clock showing unit time.

No one is questioning the nature of time. Relating time to a form of
measuring time (a clock) just complicate things; time is a SI base unit
already. Velocity will always have unit m/s (linear) or rad/s (angular).

Furthermore, taking a "displacement in the clock showing unit time", such
displacement must take time, so substituting time by a "reference" length
or angle just begs the question of where the time variable must be used.

> (Acceleration is rate of change of rate, both in mechanics and in
> economics) A formula for 'Prediction' always demands that we express
> the object (actually its state) as a function of itself (its original
> state) and not include any knowledge without the object. In general

Economics has nothing to do with the argument; the point appears to be
Physics.

> 'acceleration' means rate of increase in the number of numbers within
> unit or one.

Please review the standard definition for acceleration. Any good book of
Mechanics will do.

> The graph showing the relation between linear
> displacement (or number of units of length)or angular displacement (or
> number of cycles) and time, during acceleration, cannot give a
> continuous and smooth open curve.

(variables: E, E0 length; V velocity; A acceleration; t time)
E(t) = E0 + V*t + (A/2)*t^2

is a polynomial function in t, so continuous, differentiable, etc, in t.
What you mean by "open"? "Smooth", in my book, means having at least a
continuous second derivative. Appears to me that you are using a different
definition of "smooth".

> L=UT+1/2aT^2 cannot be a smooth open
> curve. These graphs can be smooth only without the units of time and
> length - the 'displacemet' to be measured and correlated with time,
> elongates - the information we are seeking is changing!

This does not make sense.

> If dL/dT is the 'instantaneous' velocity then what is its reciprocal
> dT/dL?

This is the inverse of the velocity. I don't know if such thing has
physical significance.

> Note that this expression is equivalent to infinite time divided
> infinite distance.

Nope; it's more like "zero time divided by zero distance". Please check the
definition of derivative; I already gave you references.

A note:
Thank you to making me review some mathematics and physics from far ago,
which I needed to counter your almost nonsensical arguments and confused
mathematical/physical concepts. This is the only reason why I did not
*PLONK*ed you before.

Bye.

--
---------------------------------------
Duran Castore (duran_cast...@yahoo.com)


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V.Gopal  
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 More options Sep 20 2002, 9:13 am
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 19 Sep 2002 20:43:32 -0700
Local: Fri, Sep 20 2002 9:13 am
Subject: Re: Differentials and their integrals - how to visualize?

It seems that all mathematics is aimed at developing Artificial
intelligence. Artificial intelligence is digital and it  cannot feel
the meaning of 'continuous change'. What I am saying has to 'felt' to
realize the truth. How do we decrease finite number X or 'delta X' and
arrive at a 'differential' say, dX? There are two possibilities:
dividing 1 (one or a finite number) by a number approaching infinity
OR by deducting a finite number or its integral multiples, from 1? By
dividing 1 by continuously increasing number we can not reach
infinitesimal or dX or what you call as zero. We can reach dX or
infinitesimal or zero only when the divisor suddenly jumps from finite
(known) to infinite - the unknowable.
The idea of 'delta X' approaching zero gives an impression as if the
decrease is continuous. A 'continuous decrease' from finite to
infinitesimal or zero is not possible, just as continuous increase
from the 'finite' cannot take us to the infinite or the unknown. Your
mind only works like a 'digital' machine and I am trying to make you
understand a continuous change. Obviously I cannot succeed.

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Shmuel (Seymour J.) Metz  
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 More options Sep 21 2002, 3:18 am
Newsgroups: sci.math
From: "Shmuel (Seymour J.) Metz" <spamt...@library.lspace.org.invalid>
Date: Fri, 20 Sep 2002 13:53:17 -0400
Local: Fri, Sep 20 2002 11:23 pm
Subject: Re: Differentials and their integrals - how to visualize?
In <38af3945.0209191943.4d57d...@posting.google.com>, on 09/19/2002
   at 08:43 PM, vgopa...@rediffmail.com (V.Gopal) said:

>It seems that all mathematics is aimed at developing Artificial
>intelligence.

No, any more than all Mathematics is aimed at developing a piano
concerto.

>Artificial intelligence is digital

Speculation, unless you have working AI.

>What I am saying has to 'felt' to realize the truth.

Mathematics deals with what you can proove via logic. For feelings,
see a shrink.

>How do we decrease finite number X or 'delta X' and
>arrive at a 'differential' say, dX?

You don't; your question has no meaning.

>The idea of 'delta X' approaching zero gives an impression as if the
>decrease is continuous.

No, the idea of taking half a phrase out of context and expecting it
to have a meaning is fundamentally wrong. The complete phrase involves
a variable (Delta X) and some function of that variable, e.g.,

  Lim DeltaX -> 0 (f(X + DeltaX)-f(X))/DeltaX

>A 'continuous decrease' from finite to
>infinitesimal or zero is not possible,

Xeno was wrong. Get over it.

>Your mind only works like a 'digital' machine

Neurons are analog.

--
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     Atid/2, Team OS/2, Team PL/I

Any unsolicited commercial junk E-mail will be subject to legal
action.  I reserve the right to publicly post or ridicule any
abusive E-mail.

I mangled my E-mail address to foil automated spammers; reply to
domain Patriot dot net user shmuel+news to contact me.  Do not
reply to spamt...@library.lspace.org


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V.Gopal  
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 More options Sep 21 2002, 6:37 pm
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 21 Sep 2002 06:07:42 -0700
Local: Sat, Sep 21 2002 6:37 pm
Subject: Re: Differentials and their integrals - how to visualize?
"Shmuel (Seymour J.) Metz" <spamt...@library.lspace.org.invalid> wrote in message <news:3d8b608d$6$fuzhry+tra$mr2ice@news.patriot.net>...

I do not deny that 'Unit' of frequency is s^-1. What I insist is that
angular acceleration or 'state of change' has no unit. Frequency and
angular velocity  indicate the same activity. Angular velocity is
radians/sec. or radians/year. We cannot quantify angular acceleration
either with one radian or within 1 second or 1 year. We place
acceleration without angle and without time.
If X-axis shows time and Y-axis shows frequency, is constant frequency
a straight line or a point? If frequency is changing (there is angular
acceleration) can we draw a SMOOTH curve showing that shows the
relation time (number of seconds) and frequency 0, 1, 2 ,3 etc.
You have to feel the 'twist' that acceleration produces.

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Shmuel (Seymour J.) Metz  
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 More options Sep 23 2002, 6:02 am
Newsgroups: sci.math
From: "Shmuel (Seymour J.) Metz" <spamt...@library.lspace.org.invalid>
Date: Sun, 22 Sep 2002 19:47:24 -0400
Local: Mon, Sep 23 2002 5:17 am
Subject: Re: Differentials and their integrals - how to visualize?
In <38af3945.0209210507.3f0d3...@posting.google.com>, on 09/21/2002
   at 06:07 AM, vgopa...@rediffmail.com (V.Gopal) said:

>I do not deny that 'Unit' of frequency is s^-1. What I insist is that
>angular acceleration or 'state of change' has no unit.

The unit of angular accelleration is s^-2.

>Frequency and angular velocity  indicate the same activity.

No.

>We place acceleration without angle and without time.

?

>If X-axis shows time and Y-axis shows frequency, is constant
>frequency a straight line or a point?

A line, of course.

>If frequency is changing (there is angular
>acceleration) can we draw a SMOOTH curve showing that shows the
>relation time (number of seconds) and frequency 0, 1, 2 ,3 etc.

If you the graph to integral time than of course it's not smooth. Both
if you're talking about acceleration than you have to admit continuous
time, and the graph is smooth in the sense you mean it.

>You have to feel the 'twist' that acceleration produces.

If the acceleration is not zero than the graph is not a line. Is that
what you mean by a twist?

--
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     Atid/2, Team OS/2, Team PL/I

Any unsolicited commercial junk E-mail will be subject to legal
action.  I reserve the right to publicly post or ridicule any
abusive E-mail.

I mangled my E-mail address to foil automated spammers; reply to
domain Patriot dot net user shmuel+news to contact me.  Do not
reply to spamt...@library.lspace.org


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V.Gopal  
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 More options Sep 23 2002, 10:22 pm
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 23 Sep 2002 09:52:37 -0700
Local: Mon, Sep 23 2002 10:22 pm
Subject: Re: Differentials and their integrals - how to visualize?
"Shmuel (Seymour J.) Metz" <spamt...@library.lspace.org.invalid> wrote in message <news:3d8e568d$4$fuzhry+tra$mr2ice@news.patriot.net>...

I am only concerned with the duration when acceleration is not zero
and angular velocity begins to increase from zero. What is the shape
of the line (straight or curved) that shows the relation between time
(passing time, as the clock shows - 0 sec, 1 second, 2 seconds etc.)
and frequency during angular acceleration 'a'=1/s^2? If 'a'>0 or if
1/s^2 is not zero then what is the shape of the curve that shows the
relation between 1/s (frequency or angular velocity) and duration 'T'
in 'seconds' starting from T=0 and 1/s=0? Is it a straight line or a
parabola? How do we calculate 1/s or angular acceleration between T=0
(clock reading) and 1/s=0 and T=1 (clock reading) and 1/s=1. How can
we calculate rate of change of 1/s (or the rate of change of
frequenncy or rate of change of angular velocity) between any two
consecutive frequencies (or two consecutive values of angular
velocitiy) during angular acceleration? We are talking of rate of
change in (displacement) angle/time within the same angular
displacement. If there is no change withing the same angular
displacement then angular accleration is never 'placed within angle of
rotation.
Then how can we know acceleration?

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V.Gopal  
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 More options Sep 26 2002, 8:32 am
Newsgroups: sci.math
From: vgopa...@rediffmail.com (V.Gopal)
Date: 25 Sep 2002 20:02:57 -0700
Local: Thurs, Sep 26 2002 8:32 am
Subject: Re: Differentials and their integrals - how to visualize?

What I wish to point out is if XY=A (a constant area) and X/Y is a
variable (SHAPE of the rectangle is the variable) then we can only
...

read more »


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