Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

[Merged by Bors] - chore: forward-port leanprover-community/mathlib#19021 #4257

Closed
wants to merge 1 commit into from
Closed

[Merged by Bors] - chore: forward-port leanprover-community/mathlib#19021 #4257

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 7 additions & 1 deletion Mathlib/LinearAlgebra/Basis.lean
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
Authors: Johannes Hölzl, Mario Carneiro, Alexander Bentkamp

! This file was ported from Lean 3 source module linear_algebra.basis
! leanprover-community/mathlib commit 04cdee31e196e30f507e8e9eb2d06e02c9ff6310
! leanprover-community/mathlib commit 13bce9a6b6c44f6b4c91ac1c1d2a816e2533d395

Check notice on line 7 in Mathlib/LinearAlgebra/Basis.lean

View workflow job for this annotation

GitHub Actions / Add annotations

Synchronization 

See https://leanprover-community.github.io/mathlib-port-status/file/linear_algebra/basis?range=04cdee31e196e30f507e8e9eb2d06e02c9ff6310..13bce9a6b6c44f6b4c91ac1c1d2a816e2533d395
! Please do not edit these lines, except to modify the commit id
! if you have ported upstream changes.
-/
Expand Down Expand Up @@ -980,6 +980,12 @@
simp only [Finset.mem_univ, if_true, Pi.zero_apply, one_smul, Finset.sum_ite_eq', zero_smul]
#align basis.of_equiv_fun_equiv_fun Basis.ofEquivFun_equivFun

@[simp]
theorem Basis.equivFun_ofEquivFun (e : M ≃ₗ[R] ι → R) : (Basis.ofEquivFun e).equivFun = e := by
ext j
simp_rw [Basis.equivFun_apply, Basis.ofEquivFun_repr_apply]
#align basis.equiv_fun_of_equiv_fun Basis.equivFun_ofEquivFun

variable (S : Type _) [Semiring S] [Module S M']

variable [SMulCommClass R S M']
Expand Down
7 changes: 6 additions & 1 deletion Mathlib/LinearAlgebra/StdBasis.lean
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
Authors: Johannes Hölzl

! This file was ported from Lean 3 source module linear_algebra.std_basis
! leanprover-community/mathlib commit f8c79b0a623404854a2902b836eac32156fd7712
! leanprover-community/mathlib commit 13bce9a6b6c44f6b4c91ac1c1d2a816e2533d395

Check notice on line 7 in Mathlib/LinearAlgebra/StdBasis.lean

View workflow job for this annotation

GitHub Actions / Add annotations

Synchronization 

See https://leanprover-community.github.io/mathlib-port-status/file/linear_algebra/std_basis?range=f8c79b0a623404854a2902b836eac32156fd7712..13bce9a6b6c44f6b4c91ac1c1d2a816e2533d395
! Please do not edit these lines, except to modify the commit id
! if you have ported upstream changes.
-/
Expand Down Expand Up @@ -289,6 +289,11 @@
theorem basisFun_repr (x : η → R) (i : η) : (Pi.basisFun R η).repr x i = x i := by simp [basisFun]
#align pi.basis_fun_repr Pi.basisFun_repr

@[simp]
theorem basisFun_equivFun : (Pi.basisFun R η).equivFun = LinearEquiv.refl _ _ :=
Basis.equivFun_ofEquivFun _
#align pi.basis_fun_equiv_fun Pi.basisFun_equivFun

end

end Module
Expand Down
Loading