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[Merged by Bors] - feat(linear_algebra/projection): add equiv_prod_of_surjective_of_is_compl
#2787
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Also make `ker_prod` a `simp` lemma.
…compl` If kernels of two surjective linear maps `f`, `g` are complement subspaces, then `x ↦ (f x, g x)` defines a linear equivalence. I also add a version of this equivalence for continuous maps.
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equiv_prod_of_surjective_of_is_complequiv_prod_of_surjective_of_is_compl, dep: 2785
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…compl` (leanprover-community#2787) If kernels of two surjective linear maps `f`, `g` are complement subspaces, then `x ↦ (f x, g x)` defines a linear equivalence. I also add a version of this equivalence for continuous maps. Depends on leanprover-community#2785
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If kernels of two surjective linear maps
f,gare complement subspaces,then
x ↦ (f x, g x)defines a linear equivalence.I also add a version of this equivalence for continuous maps.
Depends on #2785