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[Merged by Bors] - feat(CategoryTheory): the typeclass Functor.HasRightKanExtension #10384

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@joelriou joelriou commented Feb 9, 2024

This PR introduces the typeclass HasRightKanExtension L F which asserts the existence of a right Kan extension of a functor F along L. A chosen extension is obtained as rightKanExtension L F.


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Thanks!

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bors d+

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mathlib-bors bot commented Feb 11, 2024

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

joelriou and others added 10 commits February 11, 2024 10:26
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
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Thanks for the review!

bors merge

@github-actions github-actions bot added the ready-to-merge This PR has been sent to bors. label Feb 11, 2024
mathlib-bors bot pushed a commit that referenced this pull request Feb 11, 2024
)

This PR introduces the typeclass `HasRightKanExtension L F` which asserts the existence of a right Kan extension of a functor `F` along `L`. A chosen extension is obtained as `rightKanExtension L F`.



Co-authored-by: Joël Riou <37772949+joelriou@users.noreply.github.com>
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mathlib-bors bot commented Feb 11, 2024

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(CategoryTheory): the typeclass Functor.HasRightKanExtension [Merged by Bors] - feat(CategoryTheory): the typeclass Functor.HasRightKanExtension Feb 11, 2024
@mathlib-bors mathlib-bors bot closed this Feb 11, 2024
@mathlib-bors mathlib-bors bot deleted the kan-extension-2 branch February 11, 2024 10:26
dagurtomas pushed a commit that referenced this pull request Mar 22, 2024
)

This PR introduces the typeclass `HasRightKanExtension L F` which asserts the existence of a right Kan extension of a functor `F` along `L`. A chosen extension is obtained as `rightKanExtension L F`.



Co-authored-by: Joël Riou <37772949+joelriou@users.noreply.github.com>
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