How to substitute into contravariant index

Question:How to substitute into contravariant index

Posted: segfault 100 Product: Maple 2022

June 14 2024

How do you substitute into a contravariant index of a tensor say

T[~mu, nu] ?

Nothing seems to work, I tried to subs(~mu=~1,T[~mu, nu]), subs(mu=1,T[~mu, nu]), and all permutations.

Substituting values into the covariant index works fine but not contravariant.

Surely it must be possible ?

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