定義
- A subset A of an nbd space (X,ν) is p-compact if every ultra p-stack? containing A ν-converges to a point in A. The space (X,ν) is p-compact if X is a p-compact set.
出典
- Kent, D. C.(1-WAS) and Min, Won Keun(KR-KANG),Neighborhood spaces. (English summary) , Int. J. Math. Math. Sci. 32 (2002), no. 7, 387--399.