Cancellable elements in the lattice of overcommutative semigroup varieties
V. Yu. Shaprynskiǐ, Boris Munevich Vernikov · arXiv (Cornell University) · 2019
We completely determine all cancellable elements in the lattice OC of overcommutative semigroup varieties. In particular, we prove that an overcommutative semigroup variety is a cancellable element of the lattice OC if and only if it is a neutral element of this lattice