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1. • CommentRowNumber1.
   • CommentAuthorDavidRoberts
   • CommentTimeApr 26th 2019
   • PermaLink
   Author: DavidRoberts
   Format: MarkdownItexAdded comments about non-equivalence of countable choice and this theorem, as well as countable choice for countable sets. <a href="https://ncatlab.org/nlab/revision/diff/countable+unions+of+countable+sets+are+countable/8">diff</a>, <a href="https://ncatlab.org/nlab/revision/countable+unions+of+countable+sets+are+countable/8">v8</a>, <a href="https://ncatlab.org/nlab/show/countable+unions+of+countable+sets+are+countable">current</a>

   Added comments about non-equivalence of countable choice and this theorem, as well as countable choice for countable sets.

   diff, v8, current

2. • CommentRowNumber2.
   • CommentAuthorRodMcGuire
   • CommentTimeApr 26th 2019
   • PermaLink
   Author: RodMcGuire
   Format: MarkdownItexfixed bad link `https://proofwiki.org/wiki/Countable_Union_of_Countable_Set` to `https://proofwiki.org/wiki/Countable_Union_of_Countable_Sets_is_Countable` <a href="https://ncatlab.org/nlab/revision/diff/countable+unions+of+countable+sets+are+countable/9">diff</a>, <a href="https://ncatlab.org/nlab/revision/countable+unions+of+countable+sets+are+countable/9">v9</a>, <a href="https://ncatlab.org/nlab/show/countable+unions+of+countable+sets+are+countable">current</a>

   fixed bad link https://proofwiki.org/wiki/Countable_Union_of_Countable_Set

   to https://proofwiki.org/wiki/Countable_Union_of_Countable_Sets_is_Countable

   diff, v9, current