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| 2022-07-19 14:08:28 +0200 | commented answer | R_{ab} = T_{ba} and so on Thank you very much. Indeed for the permutation itself (last step) I ended up with the following snippet def permute(l, |
| 2022-07-19 12:38:53 +0200 | marked best answer | R_{ab} = T_{ba} and so on How can I permute indices in tensor fields on manifolds? I would like to define the following (0,4) tensor $R_{abcd} = g_{a[c}g_{d]b}$ but I can't find an "easy" way (apart from assigning all the components bruteforce with some for loop, I guess). I presume there should be an "ovious" way of doing that but I cannot find it. Thanks. |
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| 2022-06-11 18:09:49 +0200 | asked a question | R_{ab} = T_{ba} and so on R_{ab} = T_{ba} and so on How can I permute indices in tensor fields on manifolds? I would like to define the following |
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