Hamiltonian ordered algebras and congruence extension
Valdis Laan, Sohail Nasir, Lauri Tart · Mathematica Slovaca · 2017
Abstract We introduce the notion of Hamiltonian ordered algebra and explore its relationships with various congruence extension properties for ordered algebras. Furthermore, we give sufficient conditions for extending order-congruences or compatible quasiorders from subalgebras.