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Keywords:
Cartesian product; traces on axes; Mal’tsev conditions; congruence; axis in the product; variety of algebras
Cartesian product; traces on axes; Mal’tsev conditions; congruence; axis in the product; variety of algebras
Summary:
We give Mal’cev conditions for varieties 4V4 whose congruences on the product $A\times B, A, B\in V$, are determined by their restrictions on the axes in $A\times B$.
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