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Ecthy is offline Ecthy
Emperor
Zhonghuà Rénmín Gònghéguó
Mar 2000
time: 06:20
  Old Post 28-06-2002 02:48
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*makes it 19*

KrazyHorse is offline KrazyHorse
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Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 02:51 Visit KrazyHorse's homepage!
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Complex anal. is general math tool. Good for everything (for instance, contour integrals). Basically you can step back and forth between real problems and easier problems incomplex plane...

Algebra is useless, sort of. (At least for application to anything testable...) Part of alg. is group theory (alg. 3 was spent on that) but there's also study of rings and fields (alg. 4) then whole bunch of stuff you can go on and study (different constructs. Rings and fields have two operations, groups have one) Real numbers are a field... Complex are too. Sort of useful in more esoteric stuff (need it for understanding of geo/top beyond a certain point) and geo/top has a lot of stuff to say about underlying structure of GR...

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 02:54 Visit KrazyHorse's homepage!
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My Geo Top teacher was actually a mathematical physicist who supposedly had a bit of a name for himself. He was demonstrating solubility of different problems in QFT, and using some stuff you needed all the esoteric math for...

Ramo is offline Ramo
King
Austin, Texas, USA
Oct 1999
time: 23:20
  Old Post 28-06-2002 02:54 Visit Ramo's homepage!
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quote:
Do physicists here take all that stuff?


Over here, physics majors don't have to take anything in the second part besides vector calc and complex analysis. Also, probability.

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 02:55
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So I'm not missing anything with the algebra. How important is the complex analysis?

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 02:57 Visit KrazyHorse's homepage!
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Prob. should be picked up on your own. We never got formal intro to stats or prob. They just sort of had us muddle through. Same with computers. Had to do some programming, and I'm useless on the damn things...

KrazyHorse is offline KrazyHorse
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Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 02:58 Visit KrazyHorse's homepage!
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quote:
Originally posted by GP
So I'm not missing anything with the algebra. How important is the complex analysis?


It can be important. It's basically the last trick I pull out of the bag when trying to solve something analytically. Beyond that, there's numeric solutions...

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 02:59
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quote:
Originally posted by Eli
GP, KrazyHorse :

The next thread you open will be targeted by the ZOG.


Read my thread on locking by originators in Community. I don't think that originators "own" their threads.

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 03:02
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Actually a formal class in stats would be quite useful. You could probably skip elementary probs and stats. But you should take a class in Design of Equations. You learn more than just some higher power stats, you learn some problem solving approaches for complex, multivariable issues in the real world. Very powerful actually.

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 03:04
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quote:
Originally posted by KrazyHorse


It can be important. It's basically the last trick I pull out of the bag when trying to solve something analytically. Beyond that, there's numeric solutions...


Is there a field where you need it? The way you need first and second semester calc for mechanics. Or the way you need imaginary numbers for electronics?

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 03:05
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And actually more powerful rpogramming classes would be useful. Especially for a theorist. (According to my MS physics friend.)

KrazyHorse is offline KrazyHorse
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Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 03:08 Visit KrazyHorse's homepage!
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Good in stat. mech (and quantum sometimes). You add in the right conjugate imaginary function and end up with a nice harmonic thing...which places all sorts of tools at your disposal, cuz then there are a lot of requirements that have been placed on it. One simple example off top of my head is boltzmann law for radiation...

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 03:27
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There is some other math thingie that I'm trying to remember. Some wierd functions or something that we got when using Maple to solve for a theoretical phase diagram of two metals. They did this wired stuff with spiraling in. and Maple could follow it in and go out the other side.

I'm not explaining it very well...

KrazyHorse is offline KrazyHorse
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Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 03:51 Visit KrazyHorse's homepage!
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Nope.

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 03:55 Visit KrazyHorse's homepage!
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Maple's a Canadian invention, IIRC.

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 04:05
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It was sopmething about how the Fsolve would converge.

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 04:08 Visit KrazyHorse's homepage!
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quote:
fsolve finds a root (zero) of a system of nonlinear equations


okay...

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 04:14
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But it would do this wierd thing...really powerful solver. Do you know what I'm talking about?

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 04:28 Visit KrazyHorse's homepage!
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Sorry, nope.

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 04:32
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Crap...it's buggin me now. Even looked in some 3.5 year old notes.

How do we figure out what it is?

Alexander's Horse is offline Alexander's Horse
Deity
Panmunjon, hands up!
Jan 1970
time: 15:20
  Old Post 28-06-2002 04:43 Visit Alexander's Horse's homepage!
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*reports spammers to mods*

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 04:53
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weenie

August Borms is offline August Borms
Prince
Antwerpen
Nov 2000
time: 06:20
  Old Post 28-06-2002 04:54
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hmmmmmmmmmmmmmmmmmm

Alexander's Horse is offline Alexander's Horse
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Panmunjon, hands up!
Jan 1970
time: 15:20
  Old Post 28-06-2002 04:55 Visit Alexander's Horse's homepage!
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quote:
Originally posted by GP
weenie


Tee hee - that got your attention

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 04:57
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#115 Report this post to a moderator
Lose 30 kilos (of popups)

just bumping for kitty...

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 05:00 Visit KrazyHorse's homepage!
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I don't know what you're talking about, man...

What was the problem? Was it in 2 dimensions?

TCO is offline TCO
Emperor
Richmond, VA
Jan 1970
time: 00:20
  Old Post 28-06-2002 05:06
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2 dimensions. Yes. solving a phase diagram for two metals using the thermodynamics for free energy and some basic equations on interaction. Pretty complex actually as you vary the different variables. The two dimensions are temperature and composition.

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 05:09 Visit KrazyHorse's homepage!
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Okay...what were you solving for?

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 05:09 Visit KrazyHorse's homepage!
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Ah...

KrazyHorse is offline KrazyHorse
King
Macedonia
May 2001
time: 00:20
  Old Post 28-06-2002 05:10 Visit KrazyHorse's homepage!
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Why fsolve? What are the vectors.

 
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