Date of Publication:2010-01-01 Hits:
Date of Publication:2010-01-01
Journal:Mathematics
Affiliation of Author(s):数理与信息工程学院
Document Type:期刊
Abstract:Let $X$ be a finite set and $\mathfrak p\subseteq 2^X$, the power set of $X$, satisfying three conditions: (a) $\mathfrak p$ is an ideal in $2^X$, that is, if $A\in \mathfrak p$ and $B\subset A$, then $B\in \mathfrak p$; (b) For $A\in 2^X$ with $|A|\geq 2
Translation or Not:no