Differences
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countable_union [2013/09/14 16:50] nikolaj |
countable_union [2014/03/21 11:11] |
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- | ===== Countable union ===== | ||
- | ==== Definition ==== | ||
- | | @#88DDEE: $A\in \mathrm{Sequence}(X) $ | | ||
- | | @#88DDEE: $n\in \mathbb N\cup\{\infty\}$ | | ||
- | | @#FFBB00: $\bigcup_{j=1}^n A_j \equiv \bigcup A(\mathrm{range}(n))$ | | ||
- | |||
- | ==== Discussion ==== | ||
- | ==== Parents ==== | ||
- | === Refinement of === | ||
- | [[Indexed union]] | ||
- | === Requirements === | ||
- | [[Sequence]] |