An "almost" full embedding of the category of graphs into the category of abelian groups
An alternative characterisation of universal cells in opetopic n-categories
An Embedding theorem for abelian monoidal categories
An embedding theorem for adhesive categories
An embedding theorem for Hilbert categories
An informal introduction to topos theory
An Inverse System of Nonempty Objects with Empty Limit
Applications of Rewriting Systems and Groebner Bases to Computing Kan Extensions and Identities Among Relations
Approximation in quantale-enriched categories
Approximations and adjoints in homotopy categories
AQFT from n-functorial QFT
Are all cofibrantly generated model categories combinatorial?
Are all localizing subcategories of stable homotopy categories coreflective?
Are operads algebraic theories?
Aspects of algebraic exponentiation
Associated Graded Algebras and Coalgebras
Association schemes, classical RCFT's, and centres of monoidal functor categories
Associativity as Commutativity
Atomic toposes and countable categoricity
Auslander-Buchweitz approximation theory for triangulated categories