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[Merged by Bors] - feat(algebra/homology): the homotopy category #7484

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[Merged by Bors] - feat(algebra/homology): the homotopy category #7484

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@semorrison semorrison commented May 4, 2021 •
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semorrison and others added 25 commits May 4, 2021 19:55
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feat(category_theory/.../images): image.pre_comp_epi_of_epi
ce8b14e
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feat(category_theory/.../zero): if a zero morphism is a mono, the sou…
2ab67aa 
…rce is zero
@semorrison
add simp lemmas
dc8ac57
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feat(category_theory/.../additive_functor): additive functors preserv…
410a946 
…e zero objects
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feat(category_theory/preadditive): reformulation of mono_of_kernel_zero
25a6827
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feat(category_theory/quotient): the quotient functor is full and esse…
7e13d1b 
…ntially surjective
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feat(category_theory/subobject): minor tweaks
6fa9bfe
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Merge branch 'subobject2' into subobject_limits
62850b8
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feat(category_theory/subobjects): more about kernel and image subobjects
d6169aa
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minor
3caf09d
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Merge branch 'subobject_limits' into homology_redesign
292109b
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Merge branch 'subobject2' into subobject_limits
79e72a0
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Merge branch 'subobject_limits' into homology_redesign
01f2cc4
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Merge branch 'mono_of_kernel_iso_zero' into homology_redesign
723796d
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Merge branch 'zero' into homology_redesign
a4635dc
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feat(algebra/homology): redesign of homological complexes
b9c853b
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feat(algebra/homology/single): chain complexes supported in a single …
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…degree
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oops
bc59d44
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Merge branch 'homology_redesign' into homology_single
7e30250
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feat(algebra/homology): chain complexes are an additive category
5f441a0
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Merge branch 'functor.map_zero_object' into homology_additive
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feat(algebra/homology): homotopies between chain maps
10b42c1
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Merge branch 'quotient_functor' into homotopy_category
f1ebd3c
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feat(algebra/homology): the homotopy category
08065fd
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Update src/category_theory/quotient.lean
76676a9
@semorrison semorrison mentioned this pull request May 4, 2021
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Apply suggestions from code review
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Co-authored-by: Johan Commelin <johan@commelin.net>
@github-actions github-actions bot added the blocked-by-other-PR This PR depends on another PR which is still in the queue. A bot manages this label via PR comment. label May 4, 2021
@github-actions github-actions bot removed the merge-conflict Please `git merge origin/master` then a bot will remove this label. label May 15, 2021
@semorrison semorrison mentioned this pull request May 15, 2021
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@github-actions github-actions bot removed the blocked-by-other-PR This PR depends on another PR which is still in the queue. A bot manages this label via PR comment. label May 15, 2021
@github-actions github-actions bot added the blocked-by-other-PR This PR depends on another PR which is still in the queue. A bot manages this label via PR comment. label May 16, 2021
@github-actions github-actions bot removed the blocked-by-other-PR This PR depends on another PR which is still in the queue. A bot manages this label via PR comment. label May 17, 2021
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🎉 Great news! Looks like all the dependencies have been resolved:

💡 To add or remove a dependency please update this issue/PR description.

Brought to you by Dependent Issues (:robot: ). Happy coding!

@semorrison semorrison added the awaiting-review The author would like community review of the PR label May 18, 2021
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LGTM! Let's wait for CI to pass.

bors d+

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bors bot commented May 19, 2021

✌️ 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.

@github-actions github-actions bot 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 19, 2021
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Co-authored-by: Johan Commelin <johan@commelin.net>
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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 20, 2021
bors bot pushed a commit that referenced this pull request May 20, 2021
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feat(algebra/homology): the homotopy category (#7484)
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Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
Co-authored-by: Johan Commelin <johan@commelin.net>
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bors bot commented May 20, 2021

Pull request successfully merged into master.

Build succeeded:

@bors bors bot changed the title feat(algebra/homology): the homotopy category [Merged by Bors] - feat(algebra/homology): the homotopy category May 20, 2021
@bors bors bot closed this May 20, 2021
@bors bors bot deleted the homotopy_category branch May 20, 2021 08:06
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