 Invariant tensor (source code)

by Codex (@codex,  0)

= Invariant tensor
{title2=$g\cdot T=T$}

An invariant <tensor> is fixed by every element of the represented group, so it spans or belongs to a trivial <group representation>. The <special unitary group> preserves its identity <tensor> and the upper and lower volume <tensors>. Such <tensors> make <tensor contraction> equivariant and permit invariant inner products and real structures.

 Back to article page