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Profile William Rothamel
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Message 1705251 - Posted: 26 Jul 2015, 14:18:49 UTC - in response to Message 1705208.  
Last modified: 26 Jul 2015, 14:35:59 UTC

Mathematics is entirely (almost) based on Logic and cosequentially on Set Theory. What Gödel showed was that our system of arithmetic and algebra is not always consistent and must occasionally appeal to outside of the system to produce results that are true in the real world.

For instance 0! must be valued at 1 in order for the math to come out correct. You can see this from the Binomial Theorem for example.

Any course in Logic will include Gödel's work along with the set theoretic Zermelo-Fraenkel axiomatic system (with choice).
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Message 1705255 - Posted: 26 Jul 2015, 14:24:52 UTC - in response to Message 1705228.  

My logic masters, Ludovico Geymonat, Corrado Mangione, Pier Giorgio Odifreddi insist that logic is not a subset of mathematics but a discipline of its own. I agree with them.
Tullio
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Message 1705262 - Posted: 26 Jul 2015, 14:46:23 UTC - in response to Message 1705251.  
Last modified: 26 Jul 2015, 14:53:39 UTC

For instance 0! must be valued at 1 in order for the math to come out correct.

You are confusing ordinals with cardinals.
Zero is the first integer and called first in cardinals.
Then comes second, third...
https://en.wikipedia.org/wiki/Cardinal_number
Actually this is a hint to my quiz:)

@ Tullio.
I Think mathematics is a subset of logic.
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Message 1705264 - Posted: 26 Jul 2015, 14:49:02 UTC - in response to Message 1705255.  
Last modified: 26 Jul 2015, 14:57:22 UTC

Yes it can be the chicken instead of the egg. Logic is a discipline and when applied can produce most of Mathematics.

When computing probabilities you can construct the Venn Diagram which embodies Set Theory which follows directly from Logic. These can all be considered to be Disciplines in their own right. This does not mean that they are not related nor that one can represent and explain another of these.

Boolean Logic which is the foundation for base 2 arithmetic (Mathematics), logic and how our computers work is represented well by this example in two variables:



I suppose that pure mathematicians get all huffy and bent out of shape when someone dares to apply their beautiful, abstract creations to useful purposes.

"Here's to pure mathematics ; may it never be of use to anybody." Anonymous
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Message 1705271 - Posted: 26 Jul 2015, 15:43:26 UTC - in response to Message 1705264.  


I suppose that pure mathematicians get all huffy and bent out of shape when someone dares to apply their beautiful, abstract creations to useful purposes.

"Here's to pure mathematics ; may it never be of use to anybody." Anonymous

I know this toast of Cambridge Cavendish Laboratory (1897):
To the electron; may it never be useful to anybody!
Tullio
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Message 1705300 - Posted: 26 Jul 2015, 16:34:01 UTC - in response to Message 1705274.  

When at school we had applied maths and pure maths lessons. We could see the point of applied maths, but pure maths was just maths for the sake of it.

Unless that math leads you to split the atom or better yet fuse two of them together. Applied math would never get you there.
Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.
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Message 1705312 - Posted: 26 Jul 2015, 17:09:59 UTC - in response to Message 1705300.  

Applied math would never get you there.
What?
Applied math is the basic tool in physics.
http://space.mit.edu/home/tegmark/mathematical.html
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Message 1705352 - Posted: 26 Jul 2015, 19:55:05 UTC - in response to Message 1705300.  
Last modified: 26 Jul 2015, 19:57:15 UTC

Unless that math leads you to split the atom or better yet fuse two of them together.

It was Lise Meintner that found out how to split the atom.
She was not a mathematician.
Her colleague Otto Hahn got the Nobel Prize for that finding.
She moved to Kungälv Sweden from Germany because she was a jew in the 30's.
https://en.wikipedia.org/wiki/Lise_Meitner

It was Einstein that realized that fusion of atoms can transform mass to energy. E=MC2
Pure math.
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Message 1705375 - Posted: 26 Jul 2015, 20:48:41 UTC

https://en.wikipedia.org/wiki/Immanuel_Kant

Do not forget this man either.
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Message 1705460 - Posted: 27 Jul 2015, 4:49:07 UTC - in response to Message 1705352.  
Last modified: 27 Jul 2015, 4:53:12 UTC

It wa Enrico Fermi and his group in Rome to split the uranium nucleus with slow neutrons, but they did not recognize what they had done. God in His wisdom, made us all blind, said Emilio Segre'. It was a woman, Ida Noddack, a Czek chemist, to understand what Fermi had done but she was not believed. Then Lise Meitner and Otto Hahn gave the correct interpretation of Fermi's result and they were believed.
Tullio
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Message 1705480 - Posted: 27 Jul 2015, 5:53:45 UTC
Last modified: 27 Jul 2015, 9:28:17 UTC

Welcome back to the project, Chris.
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Message 1705530 - Posted: 27 Jul 2015, 9:17:07 UTC - in response to Message 1705488.  
Last modified: 27 Jul 2015, 9:17:47 UTC

I gave up on pure maths when I struggled with integration and differentiation at school! Applying formulas to practical physics problems like speed, motion, acceleration, & coefficient of friction was fine, but what was the point of solving quadratic equations like ax^2 + bx + c = 0? Ok they make pretty graphs but .....

ax^2 + bx + c = 0 is a simple example how to solve a polynom. Nothing else.
The process of finding a derivative is called differentiation. The reverse process is called antidifferentiation. The fundamental theorem of calculus states that antidifferentiation is the same as integration. Differentiation and integration constitute the two fundamental operations in single-variable calculus.

If you do an integration of Newton's F=m*a you get the momentum P=m*v.
One more integration and you get the kinetic energy E=m*v*v/2.
Is that philosophy or a mind game Chris?


What I want is someone to tell me how philosophy with mind games has benefited the world.

I Think you know the answer by asking the very philosophic question:
Are we alone in the universe?
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Message 1705531 - Posted: 27 Jul 2015, 9:17:38 UTC

It is good to see a thread on Philosophy in the Science corner. In my opinion Philosophy cannot be seen as a pseudo-science. It complements the actual sciences such as Maths, Fyzix, etc. The problem with Philosophy, in my opinion, is the different opinions of different individuals with no basic truth they can rely on except for the ancient philosophers, but who says that they were right?
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Message 1705534 - Posted: 27 Jul 2015, 9:25:03 UTC - in response to Message 1705530.  
Last modified: 27 Jul 2015, 9:27:14 UTC

F=dp/dt.p(momentum)=mv. So F = mdv/dt + vdm/dt. This is the case of a rocket whose mass changes because the fuel is being burned. So F is not simply ma (a acceleration). This in Newton dynamixcs.
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Message 1705537 - Posted: 27 Jul 2015, 9:34:08 UTC - in response to Message 1705531.  

It is good to see a thread on Philosophy in the Science corner. In my opinion Philosophy cannot be seen as a pseudo-science. It complements the actual sciences such as Maths, Fyzix, etc. The problem with Philosophy, in my opinion, is the different opinions of different individuals with no basic truth they can rely on except for the ancient philosophers, but who says that they were right?

Basic truth?
We don't even no what reality is.
Do we know what nothing is? That has been discussed for over 2500 years.
And what is infinity and a singularity?
Do they exist?
I don't Think anybody has been there:)
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Message 1705538 - Posted: 27 Jul 2015, 9:41:09 UTC - in response to Message 1705537.  

Read Bernard d'Espagnat "A la recherche du reel, Le regard d'un physicien", 1981, Bordas, Paris.
Tullio
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Message 1705540 - Posted: 27 Jul 2015, 9:44:14 UTC - in response to Message 1705534.  
Last modified: 27 Jul 2015, 9:55:13 UTC

F=dp/dt.p(momentum)=mv. So F = mdv/dt + vdm/dt. This is the case of a rocket whose mass changes because the fuel is being burned. So F is not simply ma (a acceleration). This in Newton dynamixcs.
Tullio

True. But your example is a special case.
Now if you increase the speed to near the speed of light the mass increases:)

Correction of your equation:
F = (dm/dt)*(dv/dt )
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Message 1705541 - Posted: 27 Jul 2015, 9:48:52 UTC - in response to Message 1705538.  

Read Bernard d'Espagnat "A la recherche du reel, Le regard d'un physicien", 1981, Bordas, Paris.
Tullio

I have seen TV shows from BBC Horizon and Morgan Freeman's Through a Wormhole where scientists are trying to explain these matters:)
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Message 1705543 - Posted: 27 Jul 2015, 9:51:05 UTC - in response to Message 1705540.  

I said I used Newton dynamics, leaving Einstein aside.
Tullio
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Message 1705544 - Posted: 27 Jul 2015, 9:57:00 UTC - in response to Message 1705543.  
Last modified: 27 Jul 2015, 9:57:24 UTC

I said I used Newton dynamics, leaving Einstein aside.
Tullio

Hehehe.
Anyway. I Think your rocket example should be like this F = (dm/dt)*(dv/dt )
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