FEniCS/basix

Handle EnrichedElements better

Opened this issue · 3 comments

mscroggs commented
  • Allow the user to enrich spaces by either preserving the functionals, or the basis functions (#580)
  • Allow non-interpolatory enrichments (eg continuous P1 enriched with DP0)
  • Check that discontinuous is given the right value when enriching a combination of continuous and discontinuous spaces
mscroggs commented

Having enriched elements that preserve partition of unity has been requested: https://fenicsproject.discourse.group/t/question-about-scaling-of-bubble-enriched-basis/13729/2?u=dokken

garth-wells commented

Having enriched elements that preserve partition of unity has been requested: https://fenicsproject.discourse.group/t/question-about-scaling-of-bubble-enriched-basis/13729/2?u=dokken

Is that even possible in general?

mscroggs commented

Having enriched elements that preserve partition of unity has been requested: https://fenicsproject.discourse.group/t/question-about-scaling-of-bubble-enriched-basis/13729/2?u=dokken

Is that even possible in general?

I don't think so. Thinking about this I think what we're after there is an enriched element that preserves the functionals which this issue already asks for