Denis-Charles Cisinski (born March 10, 1976) is a mathematician focussing on higher category theory, homotopy theory, K-theory and algebraic geometry.
[1][2] In 2001, Cisinski model structures on topoi were introduced and later named after him.
[1] Denis-Charles Cisinski obtained his PhD in 2002 at the Paris Diderot University with a thesis supervised by Georges Maltsiniotis and titled Les préfaisceaux comme modèles des types d'homotopie (Presheaves as models for homotopy types).
[3] It was expanded and released as a book in 2006, further developing the theory from Pursuing Stacks by Alexander Grothendieck.
In 2015, Denis-Charles Cisinski gave a talk at the Séminaire Nicolas Bourbaki summarizing the current state of research titled Catégories supérieures et théorie des topos (Higher categories and theory of toposes).