On the Lattice of Existence Varieties of Locally Inverse Semigroups
Karl Auinger · Canadian Mathematical Bulletin · 1994
Abstract The mapping which assigns to each existence variety of locally inverse semigroups the class of all pseudosemilattices of idempotents of members of is shown to be a complete, surjective homomorphism from the lattice of existence varieties of locally inverse semigroups onto the lattice of varieties of pseudosemilattices.