CD(4) has bounded width

Details CD(4) has bounded width CD(4) has bounded width

2007-09-12

arxiv.org/abs/0709.1934v1

Mathematics

Logic

Scientific paper

We prove that the constraint languages invariant under a short sequence of
J\'onsson terms (containing at most three non-trivial ternary terms) are
tractable by showing that they have bounded width. This improves the previous
result by Kiss and Valeriote and presents some evidence that the Larose-Zadori
conjecture holds in the congruence-distributive case.

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