Totally join- (meet-) irreducible elements are important for algebraic lattices since the join- (meet-) generates them. We study such elements for clone lattices, particularly for the clone lattice on a k-element universe. We show that in this case the set of totally join- (meet-) irreducible clones is countable; in particular that there are 2^{k - 1} (2^k - 2) countable descending chains of such clones.
Citation:
Grant R. Pogosyan, Ivo G. Rosenberg, "Algebraic Properties of Totally Irreducible Elements of Clone Lattices," ismvl, pp.109-114, 34th International Symposium on Multiple-Valued Logic (ISMVL'04), 2004