title: Richard Statman
text: # Richard Statman
  
  Richard Statman (born September 6, 1946) is an American computer scientist whose principal research interest is the theory of computation, especially symbolic computation. His research involves lambda calculus, type theory, and combinatory algebra.
  
  ## Career
  
  In 1974, Statman received his Ph.D. from Stanford University for his Ph.D. dissertation, supervised by Georg Kreisel, entitled Structural Complexity of Proofs. His achievements include the proof that the type inhabitation problem in simply typed lambda calculus is PSPACE-complete.
  
  