On 7/25/24 09:35, Vinayak Vijay wrote:
I agree that one will have to first define "symmetry" for higher-order
tensors. Perhaps one solution, at least for the 4th-order tensors, could be to
have a function 'symmetrize()' (or some other name) with additional arguments
specifying the type of symmetry, i.e. the so-called - minor symmetry (A_{ijkl}
= A_{ijlk} = A_{jikl} = A_{jilk}) or the major symmetry (A_{ijkl} = A_{klij})
or both. I'll try to write a patch.
Great, we look forward to it! I think the additional argument is a good
approach.
Best
W.
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Wolfgang Bangerth email: [email protected]
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