this is another in the long line of math methods books that plague/bewilder/frustrate physics undergrads standard: https://www.amazon.com/Mathematical-Methods-

this is another in the long line of math methods books that plague/bewilder/frustrate physics undergrads standard: https://www.amazon.com/Mathematical-Methods-Physicists-Seventh-Comprehensive/dp/0123846544 https://www.amazon.com/Mathematical-Methods-Physicists-Seven... gentler: https://www.amazon.com/Mathematical-Methods-Physical-Sciences-Mary/dp/0471198269 https://www.amazon.com/Mathematical-Methods-Physical-Science... another recent addition: https://www.amazon.com/Mathematical-Tools-Physics-Dover-Books/dp/048648212X https://www.amazon.com/Mathematical-Tools-Physics-Dover-Book... "purer" than the rest: https://www.amazon.com/Mathematical-Physics-Chicago-Lectures/dp/0226288625 https://www.amazon.com/Mathematical-Physics-Chicago-Lectures... "more fun" than the rest: https://www.amazon.com/Geometry-Physics-Introduction-Theodore-Frankel/dp/1107602602 https://www.amazon.com/Geometry-Physics-Introduction-Theodor... this pair is probably the most rigorous and difficult of the bunch (at least from what i remember): https://www.amazon.com/Classical-Mathematical-Physics-Dynamical-Theories/dp/0387406158 https://www.amazon.com/Classical-Mathematical-Physics-Dynami... https://www.amazon.com/Quantum-Mathematical-Physics-Walter-Thirring/dp/3540430784 https://www.amazon.com/Quantum-Mathematical-Physics-Walter-T... and the grand-daddy of them all https://www.amazon.com/Methods-Theoretical-Physics-International-Applied/dp/007043316X https://www.amazon.com/Methods-Theoretical-Physics-Internati...