Remarks on compactifying semigroups.
Remarks on equational theories of semilattices with operators
Remarks on heterogeneous algebras
Remarks on lattices of congruence relations of quasi-algebras
Remarks on -independence of Stone algebras
Remarks on quasivarieties of algebras
Remarks on subdirect representations in categories
Remarks on tolerance algebras
Representable epimorphisms of monoids
Représentation des algèbres universelles par des faisceaux
Representation of connected monounary algebras by means of irreducibles
The aim of the present paper is to describe all connected monounary algebras for which there exists a representation by means of connected monounary algebras which are retract irreducible in the class (or in ).
Representation of involuted semigroups by binary relations
Representation of ordered classes by classes of connected unary algebras
Representation of undirected graphs by anticommutative conservative groupoids
The paper studies tolerances and congruences on anticommutative conservative groupoids. These groupoids can be assigned in a one-to-one way to undirected graphs.
Représentations matricielles des séries d'arbre reconnaissables
Residual finiteness of a class of semigroups presented by a single relation.
Residually finite congruences and quasi-regular subsets in uniform algebras
Restricted congruence regularity of algebras.
Retract irreducibility of connected monounary algebras. I
Retract irreducibility of connected monounary algebras. II