On the regular representation of an (essentially) finite 2-group
On the representation theory of Galois and Atomic Topoi
On the Rosenberg-Zelinsky sequence in abelian monoidal categories
On the Structure of Modular Categories
On the structure of simplicial categories associated to quasi-categories
On the structure of triangulated category with finitely many indecomposables
On the vanishing of cohomology in triangulated categories
On weak maps between 2-groups
One topos, many sites
One-sided exact categories
Open Graphs and Monoidal Theories
Operadic Definition of Non-Stricts Cells
Operads in Higher-Dimensional Category Theory
Operads revisited
Operads within monoidal pseudo algebras
Opetopic bicategories: comparison with the classical theory
Opposite relation on dual polar spaces and half-spin Grassmann spaces
Ordinals in Frobenius Monads
Orientals
Paracategories I: internal parategories and saturated partial algebras