Meanings
nounKleisli category (plural Kleisli categories)
plural Kleisli categories
- category theoryA category naturally associated to any monad T, and equivalent to the category of free T-algebras.
Origin
Named after the Swiss mathematician Heinrich Kleisli (1930–2011).
Full word history & related roots →Cite this entry
APA
Kleisli category. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Kleisli%20category
MLA
“Kleisli category.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Kleisli%20category. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Kleisli category,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Kleisli%20category.
Source: Kleisli category on Wiktionary, CC BY-SA 4.0.