Define P1 with trivial Vandermonde matrix#176
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Define P1 with trivial Vandermonde matrix#176pbrubeck wants to merge 22 commits intopbrubeck/gem-tabulationfrom
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Sympy tabulations aggressively simplify the algebra and thus are capable to represent the basis for P1 as the barycentric coordinates.
This PR is to allow GEM tabulations to exploit the sparsity in a trivial coefficient matrix resulting from an initial ExpansionSet that includes the actual basis functions (at least for P1).