Universal Algebra and Lattice Theory

Universal terms for pseudo-complemented distributive lattices and Heyting algebras.- Clones of operations on relations.- Separation conditions on convexity lattices.- Some independence results in the co-ordinization of arguesian lattices.- Unary operations on completely distributive complete lattices.- Connected components of the covering relation in free lattices.- Varieties with linear subalgebra geometries.- Generalized commutativity.- The word and isomorphism problems in universal algebra.- Linear lattice proof theory: An overview.- Interpolation antichains in lattices.- Subdirectly irreducible and simple boolean algebras with endomorphisms.- A note on varieties of graph algebras.- How to construct finite algebras which are not finitely based.- Finite integral relation algebras.- Some varieties of semidistributive lattices.- Homomorphisms of partial and of complete steiner triple systems and quasigroups.- Principal congruence formulas in arithmetical varieties.- From affine to projective geometry via convexity.- More conditions equivalent to congruence modularity.

Universal terms for pseudo-complemented distributive lattices and Heyting algebras. - Clones of operations on relations. - Separation conditions on convexity lattices. - Some independence results in the co-ordinization of arguesian lattices. - Unary operations on completely distributive complete lattices. - Connected components of the covering relation in free lattices. - Varieties with linear subalgebra geometries. - Generalized commutativity. - The word and isomorphism problems in universal algebra. - Linear lattice proof theory: An overview. - Interpolation antichains in lattices. - Subdirectly irreducible and simple boolean algebras with endomorphisms. - A note on varieties of graph algebras. - How to construct finite algebras which are not finitely based. - Finite integral relation algebras. - Some varieties of semidistributive lattices. - Homomorphisms of partial and of complete steiner triple systems and quasigroups. - Principal congruence formulas in arithmetical varieties. - From affine to projective geometry via convexity. - More conditions equivalent to congruence modularity.