Lower/Raise all indices

[Frank]

Hi there,

I've been searching for a possibility to raise or lower all indices (except for those of the metric) in an expression with a given metric.

It would be great if you could tell me whether such a method exists or whether one is able to write such a rule.

Thanks in advance!

[Mario Herrero Valea]

Hi Frank,

Probably the best solution is to use FindFreeIndices[expr] to find all the free indices in your expression and then multiply them by the appropriate number of metrics.

Cheers,

Mario

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[Frank]

Hi Mario,

Thanks a lot, that's perfect!

Cheers,
Frank