Arêtes maximales des cocycles d'un graphe préordonné
Arithmetical functions on a locally finite, locally semi-modular, local lattice.
Around a neutral element in a nearlattice
Atomicity of tolerance lattices
Automorphism Groups of Posets and Lattices with a Given Subset of Fixed Points.
Automorphismen geordneter Mengen
Autormorphism groups of countable highly homogeneous partially ordererd sets.
Axiomatiques et propriétés des quasi-ordres
b-equivalent multilattices
Betweenness spaces and tree algebras
Binary and ternary relations
Two operators are constructed which make it possible to transform ternary relations into binary relations defined on binary relations and vice versa. A possible graphical representation of ternary relations is described.
Biregular semigroups. II
Bisemilattices with five essentially binary polynomials
Bisemilattice-valued fuzzy sets.
Bivariate function algebras on Posets.
Boolean algebras with a unary operator
Boolean concept lattices and good contexts
Boolean embeddings and hidden variables
Bound graph polysemy.
Bound quivers of three-separate stratified posets, their Galois coverings and socle projective representations
A class of stratified posets is investigated and their incidence algebras are studied in connection with a class of non-shurian vector space categories. Under some assumptions on we associate with a bound quiver (Q, Ω) in such a way that . We show that the fundamental group of (Q, Ω) is the free group with two free generators if is rib-convex. In this case the universal Galois covering of (Q, Ω) is described. If in addition is three-partite a fundamental domain of this covering is...