Graphs Derived from Coatoms of Lattices
摘要
The concept of graphs derived from coatoms of lattices is introduced. Two proper elements of a lattice are adjacent if their join is a coatom of a lattice. Some fundamental properties of these graphs such as cut vertex, diameter, planarity, and girth are studied. A condition is obtained under which these graphs are complete bipartite graphs. Some characterizations of such graphs are studied.