Abstract:
Under study is the structure of subsemigroup lattices of semigroups of elementary types. We establish that the subsemigroup lattices of semigroups of elementary types are lattice-universal. Also, we show that, for a series of classes \boldK of algebraic structures, each subsemigroup lattice of the semigroup of elementary types of the structures from \boldK contains the ideal lattice of a free lattice of countable rank as a sublattice.
The work was carried out in the framework of the State Task to the Sobolev Institute of Mathematics (Project 0314–2019–0003).
The results of <a data-track="click" data-track-label="link" data-track-action="section anchor" href="/article/10.1134/S0037446620050171#Sec13">Section 4</a> were obtained under the support of the Russian Science Foundation (Project 19–11–00209).