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jstoobysmith 2024-08-20 09:27:51 -04:00
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HepLean/SpaceTime/LorentzTensor/EinsteinNotation/Lemmas.lean
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@ -9,6 +9,8 @@ import HepLean.SpaceTime.LorentzTensor.EinsteinNotation.IndexNotation
# Lemmas regarding Einstein tensors
This file is currently a stub.
-/
namespace einsteinTensor

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HepLean/SpaceTime/LorentzTensor/EinsteinNotation/RisingLowering.lean Normal file
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@ -0,0 +1,21 @@
/-
Copyright (c) 2024 Joseph Tooby-Smith. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Joseph Tooby-Smith
-/
import Mathlib.LinearAlgebra.StdBasis
import HepLean.SpaceTime.LorentzTensor.Basic
import Mathlib.LinearAlgebra.DirectSum.Finsupp
import Mathlib.LinearAlgebra.Finsupp
/-!
# Dualizing indices of Einstein tensors
Dualizing indices (the more general notion of rising and lowering indices) does
nothing for Einstein tensors, since they only have one color of index.
The aim of this file is show this result.
This file is currently a stub.
-/
/-! TODO: Prove dualizing indices for Einstein tensors does nothing. -/