Abstract physical traces.
Accessible embeddings and the solution-set condition
Accessible set functors are universal
It is shown that every concretizable category can be fully embedded into the category of accessible set functors and natural transformations.
Admissible operations in categories of algebras
Algebraic aspects of topos theory
Algebraic de Morgan's laws for non-commutative rings
Algebraic localizations and elementary toposes
Algebraic models of intuitionistic theories of sets and classes.
Algebraic objects over a small category [Book]
Algebraic real analysis.
Algebras determined by their endomorphism monoids
Algèbres non déterministiques et -catégories
Almost ff-universal and q-universal varieties of modular 0-lattices
A variety 𝕍 of algebras of a finite type is almost ff-universal if there is a finiteness-preserving faithful functor F: 𝔾 → 𝕍 from the category 𝔾 of all graphs and their compatible maps such that Fγ is nonconstant for every γ and every nonconstant homomorphism h: FG → FG' has the form h = Fγ for some γ: G → G'. A variety 𝕍 is Q-universal if its lattice of subquasivarieties has the lattice of subquasivarieties of any quasivariety of algebras of a finite type as the quotient of its sublattice....
Amoeba relation and Galois-Tukey connections
An action-free characterization of weak Hopf-Galois extensions.
An application of nonstandard analysis to category
An Elementary Characterization of the Category of Partly Ordered Sets.
An elementary characterization of the category of relational systems
An embedding of groupoids and monomorphisms into simple groupoids
An example concerning set-functors