Emmy Noether`s Wonderful Theorem 2e

The book was delivered in time. It is in excellent condition. I will definitely use this supplier again. This is an excellent book for anyone who wants to understand the connection between symmetry and conservation laws in Physics. Highly recommended, especially to those who are just beginning their study in Quantum field theory.

This book has the the bare essentials for finding the mathematics for general relativity, but also that every conservation law also corresponds to a symmetry law.

I got as far as page 28 where the author states what he calls "the fundamental lemma of the calculus of variations". Unfortunately, the lemma as he states it is false. (For a counter-example, just put a = 0 , b = 2 pi, eta (t) = sin (t) and A(t) = 1.)If the author can not get even a "fundamental lemma" right, what chance is there that he can get anything else right ? And why should I read any further, since I can no longer trust what he writes?I can guess what he may have meant to write, but I don't buy a book like this so that I can waste my time struggling to guess the author's intentions. I expect him to make his meaning clear, and to state his theorems correctly.(The original review was written in February 2014. I believe that a new edition has since been published. Some errors may have been corrected in the new edition.)

I found this a very accessible introduction to Emmy Noerther's theorem. Physics is very much my weak point but the explanations are instructive and I enjoyed the read.

Very well written book. Strikes a good balance between explaining the mathematical concepts of the calculus of variations and the physical insights that Noether's theorem supplies into the conservation of energy, momentum, etc. Very illuminating, I would recommend it to anyone with a reasonable mathematical background (a couple of years,say, at undergrad level)

The Maths invoved were too much for me to comprehend the text properly

well done

This is a splendid book about Noether's aptly named "wonderful theorem." Reviewers of physics books (you could also call this a mathematics book too) often say that every physicist should read the book under review. I have no hesitation in repeating that mantra for Neuenshcwander's book. So much of physics builds on ideas of symmetry and conservation laws, and so many of these ideas are special cases of Noether's theorem, that not to appreciate the beauty and scope of the theorem would be a significant gap in one's education, not to mention a missed pleasure. Many physics books have a section or two on the theorem (e.g. Goldstein's Classical Mechanics), but none that I have found have the space to give it the gentle and broad treatment that Neuenschwander does. I note that one reviewer despairs of the book's apparent inability to state a fundamental lemma of the calculus of variations correctly (p. 28). But I think what is intended is obvious (adding "for all eta(t)" would fix it), but this is a small slip in a great book.