Congruence permutability in quasivarieties

Published 9 Dec 2025 in math.LO | (2512.09064v1)

Abstract: It is shown that a natural notion of congruence permutability for quasivarieties already implies ``being a variety''. The result follows immediately from [3] and the sole aim of this note is to state it explicitly, together with a telegraphic proof.

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