German mathematician who was a member of the intuitionist school. He supported the theory of relativity in Raum-Zeit-Materie (Space-Time-Matter) (1918). He also applied group theory 
to quantum
mechanics. 
Lorentz, H. A.; Einstein, A.; Minkowski, H.; and Weyl, H.
The Principle of Relativity: A Collection of Original Memoirs on the Special and General Theory of Relativity.
New York: Dover, 1952.
Wells, R. O. Jr. The Mathematical Heritage of Hermann Weyl. Providence, RI: Amer. Math. Soc., 1988.
Weyl, H. Space-Time-Matter. New York: Dover, 1952.
Weyl, H. The Theory of Groups and Quantum Mechanics. New York: Dover, 1950.
