George B. Arfken & Hans J. Weber 
Mathematical Methods For Physicists International Student Edition [PDF ebook] 

This best-selling title provides in one handy volume the essential mathematical tools and techniques used to solve problems in physics. It is a vital addition to the bookshelf of any serious student of physics or research professional in the field. The authors have put considerable effort into revamping this new edition. – Updates the leading graduate-level text in mathematical physics- Provides comprehensive coverage of the mathematics necessary for advanced study in physics and engineering- Focuses on problem-solving skills and offers a vast array of exercises- Clearly illustrates and proves mathematical relations New in the Sixth Edition:- Updated content throughout, based on users’ feedback- More advanced sections, including differential forms and the elegant forms of Maxwell’s equations- A new chapter on probability and statistics- More elementary sections have been deleted