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Permuting 2-uniform Tolerances on Lattices
Gábor Czédli

A 2-uniform tolerance on a lattice is a compatible tolerance relation such that all of its blocks are 2-element. We characterize permuting pairs of 2-uniform tolerances on lattices of finite length. In particular, any two 2-uniform congruences on such a lattice permute.

Keywords: Lattice tolerance, permuting tolerances, uniform tolerance, 2-uniform congruence, lattice of finite length

1991 Mathematics Subject Classification: 06B10, 06B99

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