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An inverse for Anticommutator #2451

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merged 6 commits into from
Jan 18, 2020

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// covariant tensor Sᵏˡₘₙ. |Contraction()| performs the contraction Sᵏʲⱼₙ, or
// equivalently Sʲˡₘⱼ. It is not the partial trace, which would be Sᵏʲₘⱼ (or
// Sʲˡⱼₙ). The following property holds up to roundoff:
// F.Anticommutator().Contraction() / 2 == F.
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In dimension d this would give F + Tr(F) * Identity * (d - 3) / 2, so dimension 3 is a bit magic. Maybe a comment to that effect?

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No, but it didn't make sense in other ways anyway.

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@pleroy pleroy added the LGTM label Jan 18, 2020
@eggrobin eggrobin changed the title Tensor contraction An inverse for Anticommutator Jan 18, 2020
@eggrobin eggrobin merged commit 311c757 into mockingbirdnest:master Jan 18, 2020
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