Isolated and nilpotent subsemigroups in the variants of $\IS$

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121696All isolated, completely isolated, and nilpotent subsemigroups in the semigroup $\IS$ of all injective partial transformations of an $n$-element set, considered as a semigroup with a sandwich multiplication are described.10 pagesRings and AlgebrasGroup Theory20M20Isolated and nilpotent subsemigroups in the variants of $\IS$text