===== Countable intersection ===== ==== Set ==== | @#55CCEE: context | @#55CCEE: $X$ | | @#55CCEE: context | @#55CCEE: $A\in \mathrm{Sequence}(X)$ | | @#55CCEE: context | @#55CCEE: $n\in \mathbb N\cup\{\infty\}$ | | @#FFBB00: definiendum | @#FFBB00: $\bigcap_{j=1}^n A_j \equiv \bigcap A(\mathrm{range}(n))$ | ==== Ramifications ==== ==== Parents ==== === Refinement of === [[Arbitrary intersection]] === Related === [[Sequence]]