Cofinite Filter at $B$ (余有限フィルター) (Example II.2.20)
QUESTION
Cofinite Filter at $B$ (余有限フィルター) (Example II.2.20)
Click to reveal answer ANSWER
For $B \subset X$, the family $(B)_0$ of all $B$-cofinite sets (sets $F$ such that $B \setminus F$ is finite).
Click to see question - ソースノート: chapter2.md
- カードID: cofinite-filter-at-b
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