Heinrich Kleisli in 1987

Heinrich Kleisli (/ˈklaɪsli/; October 19, 1930 – April 5, 2011) was a Swiss mathematician. He is the namesake of several constructions in category theory, including the Kleisli category and Kleisli triples. He is also the namesake of the Kleisli Query System, a tool for integration of heterogeneous databases developed at the University of Pennsylvania.

Kleisli earned his Ph.D. at ETH Zurich in 1960, having been supervised by Beno Eckmann and Ernst Specker. His dissertation was on homotopy and abelian categories. He served as an associate professor at the University of Ottawa before relocating to the University of Fribourg in 1966. He became a full professor at Fribourg in 1967.

  • Heinrich Kleisli at the Mathematics Genealogy Project
  • In memoriam: Prof. emerit. Heinrich Kleisli
  • "Inside the AMS, Vol 58, No 8, Sept 2011" (PDF). (83k)


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