Embeddings of quasicells of iterative algebras.
Enumerating left distributive groupoids
Equational compactness in infinitary algebras
Equational logic and theories in sentential languages
Equationally compact algebras (I)
Equationally compact algebras II
Equationally compact algebras (III)
Errata for the paper "Equationally compact algebras II" (Fundamenta Mathematica 61 (1968), pp. 271-281)
Every group is a maximal subgroup of the semigroup of relations
Exchange properties and basis properties for closure operators
Existence and uniqueness of -representations of algebras
Filters and annihilators in implication algebras
Filters and Simple Graphic Algebras.
Finite monogenic distributive systems
Flocks in universal and Boolean algebras
We propose the notion of flocks, which formerly were introduced only in based algebras, for any universal algebra. This generalization keeps the main properties we know from vector spaces, e.g. a closure system that extends the subalgebra one. It comes from the idempotent elementary functions, we call "interpolators", that in case of vector spaces merely are linear functions with normalized coefficients. The main example, we consider outside vector spaces, concerns Boolean algebras,...
Foncteur pleinement fidèle dense classant les algèbres
Generalized inflations and null extensions
An inflation of an algebra is formed by adding a set of new elements to each element in the original or base algebra, with the stipulation that in forming products each new element behaves exactly like the element in the base algebra to which it is attached. Clarke and Monzo have defined the generalized inflation of a semigroup, in which a set of new elements is again added to each base element, but where the new elements are allowed to act like different elements of the base, depending on the context...
Genomorphisms of lattices and semilattices
Graphs and Betweeness
Grouplike Menger algebras.