[Merged by Bors] - adding Functor.sum', dual to Functor.prod'.
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We add `Functor.sum'` a variant of `Functor.sum`. This situation is dual to [docs#CategoryTheory.Functor.prod'](https://leanprover-community.github.io/mathlib4_docs/find/?pattern=CategoryTheory.Functor.prod%27#doc). We also add `inl_sum'` and `inr_sum'` which prove that the sum functor `F.sum' G` precomposed with the left (resp. right) inclusion functor is isomorphic to `F` (resp. `G`).
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Functor.sum', dual to Functor.prod'.Functor.sum', dual to Functor.prod'.
Louddy
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We add `Functor.sum'` a variant of `Functor.sum`. This situation is dual to [docs#CategoryTheory.Functor.prod'](https://leanprover-community.github.io/mathlib4_docs/find/?pattern=CategoryTheory.Functor.prod%27#doc). We also add `inl_sum'` and `inr_sum'` which prove that the sum functor `F.sum' G` precomposed with the left (resp. right) inclusion functor is isomorphic to `F` (resp. `G`).
atarnoam
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Apr 16, 2024
We add `Functor.sum'` a variant of `Functor.sum`. This situation is dual to [docs#CategoryTheory.Functor.prod'](https://leanprover-community.github.io/mathlib4_docs/find/?pattern=CategoryTheory.Functor.prod%27#doc). We also add `inl_sum'` and `inr_sum'` which prove that the sum functor `F.sum' G` precomposed with the left (resp. right) inclusion functor is isomorphic to `F` (resp. `G`).
uniwuni
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Apr 19, 2024
We add `Functor.sum'` a variant of `Functor.sum`. This situation is dual to [docs#CategoryTheory.Functor.prod'](https://leanprover-community.github.io/mathlib4_docs/find/?pattern=CategoryTheory.Functor.prod%27#doc). We also add `inl_sum'` and `inr_sum'` which prove that the sum functor `F.sum' G` precomposed with the left (resp. right) inclusion functor is isomorphic to `F` (resp. `G`).
callesonne
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Apr 22, 2024
We add `Functor.sum'` a variant of `Functor.sum`. This situation is dual to [docs#CategoryTheory.Functor.prod'](https://leanprover-community.github.io/mathlib4_docs/find/?pattern=CategoryTheory.Functor.prod%27#doc). We also add `inl_sum'` and `inr_sum'` which prove that the sum functor `F.sum' G` precomposed with the left (resp. right) inclusion functor is isomorphic to `F` (resp. `G`).
Jun2M
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Apr 24, 2024
We add `Functor.sum'` a variant of `Functor.sum`. This situation is dual to [docs#CategoryTheory.Functor.prod'](https://leanprover-community.github.io/mathlib4_docs/find/?pattern=CategoryTheory.Functor.prod%27#doc). We also add `inl_sum'` and `inr_sum'` which prove that the sum functor `F.sum' G` precomposed with the left (resp. right) inclusion functor is isomorphic to `F` (resp. `G`).
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We add
Functor.sum'a variant ofFunctor.sum. This situation is dual to docs#CategoryTheory.Functor.prod'.We also add
inl_sum'andinr_sum'which prove that the sum functorF.sum' Gprecomposed with the left (resp. right) inclusion functor is isomorphic toF(resp.G).