Einige Bemerkungen über Clones und interpolierbare Funktionen auf universellen Algebren
Endomorphisms and connected components of partial monounary algebras
Endomorphisms of partial monounary algebras
Equational bases for weak monounary varieties
It is well-known that every monounary variety of total algebras has one-element equational basis (see [5]). In my paper I prove that every monounary weak variety has at most 3-element equational basis. I give an example of monounary weak variety having 3-element equational basis, which has no 2-element equational basis.
Essentially equational categories
Exchangeable partial groupoids I
Exchangeable partial groupoids II
Exponentiality in categories of partial algebras.
Exponentiation of relational systems with respect to strong homomorphisms.