| 1f440fbe | 26-Jan-2021 |
Toby Isaac <tisaac@cc.gatech.edu> |
Fix nodal bases for Lagrange dual space to avoid symmetry problems
Before, wrong: under symmetry transformation, a boundary dof could make to a linear combination of
boundary dofs and interior dofs
Fix nodal bases for Lagrange dual space to avoid symmetry problems
Before, wrong: under symmetry transformation, a boundary dof could make to a linear combination of
boundary dofs and interior dofs
Now, correct: under every symmetry transformation, boundary dofs and interior dofs map to boundary dofs and interior dofs, respectively
Why it was wrong before: the pushforward of the k-form basis at one point did not have the same boundary/interior decomposition
as the basis at the point it mapped to under symmetry
How it was fixed: choose a basis for the k-form that, when mapped to the equilateral simplex, looks appropriately symmetric.
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