Hi. I've been working on a Kaluza-Klein dimensional reduction. In the reduced model there are terms like $g*{a 5}$ and $g*{5 a}$. Is the a command that sort the indices, and allows to write everything in terms of a single component?

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Hi. I've been working on a Kaluza-Klein dimensional reduction. In the reduced model there are terms like $g*{a 5}$ and $g*{5 a}$. Is the a command that sort the indices, and allows to write everything in terms of a single component?

closed with the note:
Solved!... after declaring the symmetries os the tensor $g$, `canonicalise` does the job

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