R Shankar has introduced major additions & updated key presentations in this second edition of Principles of Quantum Mechanics New features of this innovative text include an entirely rewritten mathematical introduction a discussion of Time-reversal invariance & extensive coverage of a variety of path integrals & their applications Additional highlights include- Clear accessible treatment of underlying mathematics- A review of Newtonian Lagrangian & Hamiltonian mechanics- Student understanding of quantum theory is enhanced by separate treatment of mathematical theorems & physical postulates- Unsurpassed coverage of path integrals & their relevance in contemporary physics The requisite text for advanced undergraduate- & graduate-level students Principles of Quantum Mechanics Second Edition is fully referenced & is supported by many exercises & solutions The book's self-contained chapters also make it suitable for independent study as well as for courses in applied disciplines