@article{erne1993distributive, abstract = {We study several kinds of distributivity for concept lattices of contexts. In particular, we find necessary and sufficient conditions for a concept lattice to be(1)distributive,(2)a frame (locale, complete Heyting algebra),(3)isomorphic to a topology,(4)completely distributive,(5)superalgebraic (i.e., algebraic and completely distributive).}, affiliation = {Institut für Mathematik Universität Hannover Hannover Germany}, author = {Erné, Marcel}, doi = {10.1007/BF01195382}, interhash = {f30c769c54f5eb98962742b324651451}, intrahash = {dd7f97b10532feab21d486ebb6783939}, issn = {0002-5240}, issue = {4}, journal = {Algebra Universalis}, keyword = {Mathematics and Statistics}, pages = {538-580}, publisher = {Birkhäuser Basel}, title = {Distributive laws for concept lattices}, url = {http://dx.doi.org/10.1007/BF01195382}, volume = 30, year = 1993 } @article{hales1964nonexistence, author = {Hales, A. W.}, interhash = {2e2b85532b56b6caaac29b23e33f972f}, intrahash = {4d17473cee1aa8c33d821aacf2fbb95c}, journal = {Fundamentae Mathematica}, pages = {45-66}, title = {On the non-existence of free complete Boolean algebras}, url = {http://matwbn.icm.edu.pl/tresc.php?wyd=1&tom=54}, volume = 54, year = 1964 }