🚀 go-pugleaf

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 Hello all.  Engr manager wishes to keep up learning about physics in his
spare time.  I've a B A Sc in electronics.  I would like refernces on the
following two topics, preferably textbooks, which are readable at my level
of understanding.  Took elementary QM (solving Schreodinger's for various
wells) and electromagnetics ten years ago.  I'm also still very good at
math.  Prefer readable undergrad (maybe 1st year grad) level, and should be
considered one of the better books/articles on the topic.

  The topics are:

 1) Group Theory
 2) Noeller's Theorem (symmetry = conservation law)
    (on recommendation already in is Goldstein's Classical Mechanics)

 I would also welcome any reccomendations on what you would consider
good materials to study up, in one's spare time, on any other subjects
that you think are particularly relevant or important.
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