Ideal nil-extensions of semigroups with semimodular congruence lattices.
Idempotent cross-sections of J-classes.
Idempotent Endomorphisms on Standard Threads.
Idempotent separating congruences on an orthodox semigroup via the least inverse congruence.
In memory of Jaroslav Ježek
Infinite products in monoids.
Inner extrapolation of semigroup translations.
Interpolation property in semigroups.
Isomorphisms of wreath products of monoids, I.