Hermann Klaus Hugo Weyl was a German mathematician, theoretical physicist, logician and philosopher. Although much of his working life was spent in Zürich, Switzerland, and then Princeton, New Jersey,
Hermann Weyl (left) with Ernst Peschl
The Theory of Groups and Quantum Mechanics (translated from the second, revised German edition by Howard P. Robertson)
Mathematical physics is the development of mathematical methods for use in physics and their applications. A broader definition would include the development of mathematical ideas inspired by physics,