External operators #3394
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External operators #3394
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…elf._comm attributes for Cofunction
… representation for a given map (l2, L2, H1)
…edrakeproject/firedrake into pointwise-adjoint-operator_dualspace
dham
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Feb 21, 2024
JDBetteridge
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Mar 5, 2024
--------- Co-authored-by: Rob Kirby <[email protected]>
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This PR contains the Firedrake implementation of external operators. The corresponding UFL implementation was merged in FEniCS/ufl#206. The Firedrake infrastructure to make external operators has already been introduced in #2297, making that PR pretty "small".
The external operator interface allows for incorporating arbitrary operators mapping between finite element spaces in Firedrake. Those operators are external in the sense that their implementation is left to be specified by the user. This PR mainly contains: