(i, j)-locally quasi compact

定義

• A bitopological space (X,τ_1,τ_2) is (i, j)-locally quasi compact (briefly, (i, j)-lqc) if each point x \in X has an i-neighborhood U(x) such that τ_j closure of U(x) is quasi 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.