[Merged by Bors] - feat(LinearAlgebra/AffineSpace/AffineSubspace/Basic): comap_map_eq_of_injective#32017
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[Merged by Bors] - feat(LinearAlgebra/AffineSpace/AffineSubspace/Basic): comap_map_eq_of_injective#32017jsm28 wants to merge 4 commits intoleanprover-community:masterfrom
comap_map_eq_of_injective#32017jsm28 wants to merge 4 commits intoleanprover-community:masterfrom
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…f_injective`
Add a lemma
```lean
lemma comap_map_eq_of_injective (f : P₁ →ᵃ[k] P₂) (hf : Function.Injective f)
(s : AffineSubspace k P₁) : (s.map f).comap f = s :=
```
deduced from a `GaloisCoinsertion` as is done for such a lemma for
some other subobject types.
PR summary f7702fa2d1Import changes for modified filesNo significant changes to the import graph Import changes for all files
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You can run this locally as follows## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>
## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>The doc-module for No changes to technical debt.You can run this locally as
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Co-authored-by: Ruben Van de Velde <[email protected]>
Co-authored-by: Ruben Van de Velde <[email protected]>
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…f_injective` (#32017) Add a lemma ```lean lemma comap_map_eq_of_injective (f : P₁ →ᵃ[k] P₂) (hf : Function.Injective f) (s : AffineSubspace k P₁) : (s.map f).comap f = s := ``` deduced from a `GaloisCoinsertion` as is done for such a lemma for some other subobject types.
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Add a lemma
deduced from a
GaloisCoinsertionas is done for such a lemma for some other subobject types.