The clone lattice Cl(X) over an infinite set X is a complete algebraic lattice with compact elements. We show that every algebraic lattice with at most compact elements is a complete sublattice of Cl(X).
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-fm195-1-1, author = {Michael Pinsker}, title = {Algebraic lattices are complete sublattices of the clone lattice over an infinite set}, journal = {Fundamenta Mathematicae}, volume = {193}, year = {2007}, pages = {1-10}, zbl = {1127.08001}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm195-1-1} }
Michael Pinsker. Algebraic lattices are complete sublattices of the clone lattice over an infinite set. Fundamenta Mathematicae, Tome 193 (2007) pp. 1-10. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm195-1-1/