Permuting 2-uniform tolerances on lattices
Gábor Czédli · arXiv (Cornell University) · 2019
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.