8 citations · 15 across the 15 of their papers we have counts for
Showing math.LOShow all
2 papers · 1 filter
math.LO2026
Preorder Preservation versus Congruence Preservation
Patrick Cégielski, Irène Guessarian
Looking at some monoids and (semi)rings (natural numbers, integers and -adic integers), and more generally, residually finite algebras (in a strong sense), we prove the equivale…
math.LO2024
Congruence Preservation, Lattices and Recognizability
Patrick Cegielski, Serge Grigorieff, Irene Guessarian
We study in general algebras Gratzer's notion of congruence preserving function, characterizing functions in terms of stability under inverse image of particular Boolean algebras o…