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Rebase infrastructure for coequalizers to double arrows #1098
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This one is now ready for review - there is some low-hanging fruit for refactoring coequalizers (some names, some more prose, formulating the universal property as a large proposition, ...) which I don't want to get into here |
src/synthetic-homotopy-theory/dependent-universal-property-coequalizers.lagda.md
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Here's the rest of my review :)
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💯
src/synthetic-homotopy-theory/universal-property-coequalizers.lagda.md
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This PR looks ready to merge to me! Let me know if you are not done |
In anticipation for #885. The proof of the universal property of coequalizers being preserved by equivalences of coforks got a bit unwieldy, but it should become more conceptual once morphisms and equivalences of cocones under spans are integrated (for now they exist only in the other PR).