## Interval decomposition lattices are balanced.(English)Zbl 1352.06005

Summary: Intervals in binary or $$n$$-ary relations or other discrete structures generalize the concept of an interval in a linearly ordered set. They are defined abstractly as closed sets of a closure system on a set, satisfying certain axioms. Join-irreducible partitions into intervals are characterized in the lattice of all interval decompositions. This result is used to show that the lattice of interval decompositions is balanced, and the case when this lattice is distributive is also characterised.

### MSC:

 06B05 Structure theory of lattices 06A15 Galois correspondences, closure operators (in relation to ordered sets) 06C10 Semimodular lattices, geometric lattices
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### References:

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