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math.RA2015★ 1 cited
Absorption and directed Jónsson terms
Alexandr Kazda, Marcin Kozik, Ralph McKenzie +1
We prove that every congruence distributive variety has directed Jónsson terms, and every congruence modular variety has directed Gumm terms. The directed terms we construct witnes…
math.RA2011
On the number of finite algebraic structures
Erhard Aichinger, Peter Mayr, Ralph McKenzie
We prove that every clone of operations on a finite set A, if it contains a Malcev operation, is finitely related -- i.e., identical with the clone of all operations respecting R f…