Peter Woit has just made the final draft (dated 10/25/16) of his new textbook Quantum Theory, Groups and Representations: An Introduction freely available for download from his website. It covers quantum theory with a heavy emphasis on groups and representation theory and "contains significant amounts of material not well-explained elsewhere." He expects to finish up the diagrams and publish it next year some time, potentially through Springer.#quantummechanics http://boffosocko.com/2016/10/26/quantum-theory-groups-and-representations-an-introduction-by-peter-woit/