Restriction categories III: colimits, partial limits, and extensivity
Ribbon categories and (unoriented) CFT: Frobenius algebras, automorphisms, reversions
Ribbon Structure in Symmetric Pre-monoidal Categories
Rigidification of quasi-categories
Ring extension problem, Shukla cohomology and Ann-category theory
Rota-Baxter Categories
Rouquier's cocovering theorem and well-generated triangulated categories