On 5/24/21 11:52 PM, [email protected] wrote:
I am extremely sorry, the ordering is actually mentioned in the documentation
of TensorProductPolynomials
<https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.dealii.org%2Fcurrent%2Fdoxygen%2Fdeal.II%2FclassTensorProductPolynomials.html&data=04%7C01%7CWolfgang.Bangerth%40colostate.edu%7C7305b7f6099345ea6abd08d91f415786%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C637575188746128694%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=d4t5afMecx2mhH%2FwxLFUGEEAHltSOgvy2mFOtcZoLO4%3D&reserved=0>.
It is lexicographic. I didn't look at this carefully. I suppose the ordering
would then be the same for FE_DGQLegendre.
It doesn't have to be. For example, for FE_Q, we also build on
TensorProductPolynomials but the ordering is not lexicographic. So it would
still be of interest to document the order of shape functions if you end up
finding out what it is!
Best
W.
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Wolfgang Bangerth email: [email protected]
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