## Krokhin Intervals in clone lattices, Dissertation

- Krokhin Intervals in clone lattices, Dissertation
- 1998

It is proved that if a nite non-trivial quasi-order is not a linear order then there exist 2 @ 0 clones, which consist of functions preserving the quasi-order and contain all unary functions with this property. It is shown that, for a linear order on a three-element, there are only 7 such clones.

@inproceedings{Krokhin2007ClonesPA,
title={Clones preserving a quasi - orderAndrei},
author={Andrei A. Krokhin and Dietmar Schweigert},
year={2007}
}