Recent content by da615

Not strictly on topic, but these are some good intro. notes to GR. http://pancake.uchicago.edu/~carroll/notes/

Sauron, The mathematical treatment of wormholes needs a fairly extensive background in tensor analysis, Cartan forms and point-set topology. Even if you are familiar only with tensor analysis, you have access to quite a bit of the Mathematical literature on the topic. Basically, you are...

Could you show the tensor transformation law you are using and the details of your calculation?

I suggest that you vary the routine (agenda ?) everyday. One day, you could watch some sections of movies about math and then have a discussion. Another day you can play card games that involve math reasoning. Devote the next day to puzzles (trying the 4-color theorem?). After that assign each...

Haelfix, I heartily agree with your remarks about Sturm-Liouville functions. :cool: I wish that profs who teach Math methods (and even EM, QM and CM classes) really emphasize the connection between different types of functions, etc. Students often see these individual Math solution methods in...

I recently came across [FONT=Comic Sans MS]Nonlinear Dynamics and Chaos by Strogatz and I'm recommending it to all my Physics/Applied Math friends. This is a great introductory book on the subject and you don't need any more Math than is taught in a basic Diff. Eq. course. I love this book...

Another of my original geek jokes: Q1: What is the difference between Physics and Engineering? A: Engineering is Physics in the limit of zero proofs. Q2: What is the difference between Physics and Applied Math? A: Applied Math is Physics in the limit of zero approximations. :blushing:

A scientific pome Quasars burn bright, Hot stars shine blue Spacetime is warped And so are you

Thanks to quantum randomness, I don't have Hitler's mustache. o:)

My body is a collection of recycled atoms some of which may have come from Hitler, Attila the Hun and/or Quasimodo.

One of my profs told me that Niels Bohr was so dyslexic that Bohr got someone else to type his Ph.D. thesis.

It's just the application of the 2nd law of thermo to an arbitrary pig. Nothing personal here. The universe ultimately determines the fate of the pig.

I think that a personal reply is in order. (Googling a topic will not provide a personal angle, which may be important to someone possibly looking into entering the field.) Graduates who go into Astrophysics choose to specialize in either the observational or the theoretical aspect of the...

Thanks for the encouraging comments! As for pigs, they tend to sausage as time -> infinity.

Help with Math in Quantum Hi, I joined this forum recently so I'm a little late in posting. For Math used in QM refer the 2-volume Dover book "Mathematics of Classical and Quantum Physics" by Byron and Fuller. Although Shanker's book is considered a grad level text you could still go to...