Maximal and minimal C-monoids
Edith Mireya Vargas · Demonstratio Mathematica · 2011
Abstract In this paper a restricted version of the Galois connection between polymorphisms and invariants, called Pol − CInv, is studied, where the invariant relations are restricted to so-called clausal relations. The lattice of all clones arising from this Galois connection, so-called C-clones, is investigated up to equality of their unary parts, denominated C-monoids. All atoms and co-atoms in the lattice of all C-monoids are characterized.