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[Merged by Bors] - feat(category_theory/comm_sq): functors mapping pullback/pushout squares #14351

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[Merged by Bors] - feat(category_theory/comm_sq): functors mapping pullback/pushout squares #14351

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semorrison
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lemma map_is_pullback [preserves_limit (cospan h i) F] (s : is_pullback f g h i) :
  is_pullback (F.map f) (F.map g) (F.map h) (F.map i) := ...

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@semorrison semorrison added awaiting-review The author would like community review of the PR awaiting-CI The author would like to see what CI has to say before doing more work. labels May 24, 2022
@semorrison semorrison requested a review from jcommelin May 24, 2022 10:23
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bors bot commented May 24, 2022

✌️ semorrison can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.

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jcommelin approved these changes May 24, 2022
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Thanks 🎉

If CI passes, please remove the label awaiting-CI and merge this yourself, by adding a comment bors r+.

bors d+

@leanprover-community-bot-assistant leanprover-community-bot-assistant added delegated The PR author may merge after reviewing final suggestions. and removed awaiting-review The author would like community review of the PR labels May 24, 2022
@github-actions github-actions bot removed the awaiting-CI The author would like to see what CI has to say before doing more work. label May 24, 2022
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bors merge

@github-actions github-actions bot added the ready-to-merge All that is left is for bors to build and merge this PR. (Remember you need to say `bors r+`.) label May 24, 2022
bors bot pushed a commit that referenced this pull request May 24, 2022
@semorrison
feat(category_theory/comm_sq): functors mapping pullback/pushout squa…
9d193c5 
…res (#14351)

```
lemma map_is_pullback [preserves_limit (cospan h i) F] (s : is_pullback f g h i) :
  is_pullback (F.map f) (F.map g) (F.map h) (F.map i) := ...
```




Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
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bors bot commented May 24, 2022

Pull request successfully merged into master.

Build succeeded:

@bors bors bot changed the title feat(category_theory/comm_sq): functors mapping pullback/pushout squares [Merged by Bors] - feat(category_theory/comm_sq): functors mapping pullback/pushout squares May 24, 2022
@bors bors bot closed this May 24, 2022
@bors bors bot deleted the semorrison/map_comm_sq branch May 24, 2022 14:10
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