The Iséki-type characterization of certain regular ordered semigroups
Characterizations of certain monounary algebras. II
Stackbases in power sets of neighbourhood spaces preserving the continuity of mappings
Autonomous automata and closures with the same endomorphism monoids
On homeomorphic topologies and equivalent set-systems
Characterizations of certain monounary algebras. I
Concerning a non-realizability of connected compact semi-separated closure operations by set-systems
On connected unars with regular endomorphism monoids
Isomorphic algebraic pre-closures and equivalent set-systems
Note on compatible binary relations on algebras
Range closure extension of input-output relations of topological general systems
On Tabor's problem concerning a certain quasi-ordering of iterative roots of functions.
Coregularity of endomorphism monoids of unars
Transitively acting monoids of local automorphisms of locally finite trees
Regularity and transitivity of local-automorphism semigroups of locally finite forests
State hypergroups of automata
Abelizations of weakly associative hyperstructures based on their direct squares
Multistructures determined by differential rings
Characterizations of totally ordered sets by their various endomorphisms
We characterize totally ordered sets within the class of all ordered sets containing at least three-element chains using a simple relationship between their isotone transformations and the so called 2-, 3-, 4-endomorphisms which are introduced in the paper. Another characterization of totally ordered sets within the class of ordered sets of a locally finite height with at least four-element chains in terms of the regular semigroup theory is also given.
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