4 http://hdl.handle.net/10338.dmlcz/143968 4 Partitioning bases of topological spaces http://hdl.handle.net/10338.dmlcz/143977 Partitioning bases of topological spaces Mapping theorems on countable tightness and a question of F. Siwiec http://hdl.handle.net/10338.dmlcz/143976 Mapping theorems on countable tightness and a question of F. Siwiec Nonconvex Lipschitz function in plane which is locally convex outside a discontinuum http://hdl.handle.net/10338.dmlcz/143975 Nonconvex Lipschitz function in plane which is locally convex outside a discontinuum Some properties of Eulerian lattices http://hdl.handle.net/10338.dmlcz/143974 Some properties of Eulerian lattices