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1. • CommentRowNumber1.
   • CommentAuthorGuest
   • CommentTimeMay 25th 2023
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   Author: Guest
   Format: MarkdownItexadded definition in structural set theory of unions of subsets as wide pushouts of families of injections <a href="https://ncatlab.org/nlab/revision/diff/union/13">diff</a>, <a href="https://ncatlab.org/nlab/revision/union/13">v13</a>, <a href="https://ncatlab.org/nlab/show/union">current</a>

   added definition in structural set theory of unions of subsets as wide pushouts of families of injections

   diff, v13, current

2. • CommentRowNumber2.
   • CommentAuthorGuest
   • CommentTimeMay 25th 2023
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   Author: Guest
   Format: MarkdownItexcoherent categories are only those categories having well-behaved finite unions of subobjects; the ones which have all well-behaved unions of subobjects are infintary coherent categories <a href="https://ncatlab.org/nlab/revision/diff/union/13">diff</a>, <a href="https://ncatlab.org/nlab/revision/union/13">v13</a>, <a href="https://ncatlab.org/nlab/show/union">current</a>

   coherent categories are only those categories having well-behaved finite unions of subobjects; the ones which have all well-behaved unions of subobjects are infintary coherent categories

   diff, v13, current

3. • CommentRowNumber3.
   • CommentAuthorGuest
   • CommentTimeMay 25th 2023
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   Author: Guest
   Format: MarkdownItexcorrection: unions of subsets are wide pushouts of the injections from the intersection of the subsets. <a href="https://ncatlab.org/nlab/revision/diff/union/13">diff</a>, <a href="https://ncatlab.org/nlab/revision/union/13">v13</a>, <a href="https://ncatlab.org/nlab/show/union">current</a>

   correction: unions of subsets are wide pushouts of the injections from the intersection of the subsets.

   diff, v13, current