Lattice of retracts of monounary algebras
Danica Jakubı́ková-Studenovská, Jozef Pócs · Mathematica Slovaca · 2011
Abstract We investigate lattices of retracts of monounary algebras. Semimodularity and concepts related to semimodularity (M-symmetry and Mac Lane’s condition) are dealt with. Further, we give a description of all connected monounary algebras with modular retract lattice.