2009/29/2

Special m-hyperidentities in biregular leftmost graph varieties of type (2,0)

Function classes and relational constraints stable under compositions with clones

Hypersatisfaction of formulas in agebraic systems

The maximal subsemigroups of the ideals of some semigroups of partial injections

Two constructions of De Morgan algebras and De Morgan quasirings

Semi-open sets in biclosure spaces

Knowledge bases and automorphic equivalence of multi-models versus linear spaces and graphs