机译:非交换模态环与内部相等
School of Mathematics and Physics, University of Tasmania G.P.O. Box 252-37, Hobart, Tasmania 7001, Australia;
School of Mathematics and Physics, University of Tasmania G.P.O. Box 252-37, Hobart, Tasmania 7001, Australia;
School of Mathematical and Physical Sciences, Murdoch University Perth, Western Australia 6150, Australia;
modal logic; modal Boolean ring; equality algebra;