regular open

Last-modified: 2010-08-14 (土) 14:26:54

Definition

A subset A of a topological space X is called regular open if imgtex.fcgi?%5bres=100%5d%7b$A=%5cmathrm%7bint%7d%28%5cmathrm%7bcl%7d%28A%29%29$%7d%25.png .