(i, j)-locally countably compact in Raghavan and Reilly's sense

定義

• A bitopological space (X,τ_1,τ_2) is (i, j)-locally countably compact in Raghavan and Reilly's sense (briefly, (i, j)-RRlcc) if each point x in X has an j-neighborhood U(x) which is i-countably compact.

出典

• Dvalishvili, B. P.,Bitopological spaces: theory, relations with generalized algebraic structures,and applications,North-Holland Mathematics Studies, 199. Elsevier Science B.V., Amsterdam, 2005.