On injective endomorphisms of the semigroup ${\mathbf{B}}_{\omega }^{{\mathcal{F}}^4}$ with a four-element family ${\mathcal{F}}^4$ of inductive non-empty subsets of $\omega$

Oleg Gutik, Marko Serivka

We describe injective endomorphisms of the semigroup ${\mathbf{B}}_{\omega }^{{\mathcal{F}}^4}$ with a four-element family ${\mathcal{F}}^4$ of inductive non-empty subsets of $\omega$. In particu…