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math.RA2013
CD-independent subsets in meet-distributive lattices
Gabor Czedli
A subset of a finite lattice is CD-independent if the meet of any two incomparable elements of equals 0. In 2009, Czédli, Hartmann and Schmidt proved that any two maxim…
math.RA2013
The ordered set of principal congruences of a countable lattice
Gabor Czedli
For a lattice L, let Princ L denote the ordered set of principal congruences of L. In a pioneering paper, G. Gratzer characterized the ordered sets Princ L of finite lattices L; he…