Georges Maltsiniotis is a French mathematician, who works at the Institut de Mathématiques de Jussieu, Université Paris 7 Denis Diderot.
He has worked for many years now editing, extending and completing the work of Grothendieck on Pursuing Stacks, and areas such as Les Dérivateurs and Grothendieck's homotopy theory. Most materials available at his
La K-théorie d’un dérivateur triangulé (suivi d’un appendice par B. Keller) dans “Categories in Algebra, Geometry and Mathematical Physics”, Contemp. Math. 431, pp. 341-368, (2007); Version preprint: ps (2005)
Catégories triangulées supérieures, Pré-preprint ps (2005)
Grothendieck $\infty$-groupoids, and still another definition of $\infty$-categories, arXiv – see Grothendieck ∞-groupoid