gp-open

定義

In topological spaces, a subset A is called gp-open (generalized preopen) if for every closed set F, the preinterior of A contains F whenever A contains F.

参考

I. Arokirani, K. Balachandran and Julian Dontchev, Some characterizations of gp-irresolute and gp-continuous maps between topological spaces, Mem. Fac. Sci. Kochi Univ. (Math.) 20(1999), 93-104.