Local finite element approximation of Sobolev differential forms
Local finite element approximation of Sobolev differential forms
复制标题
Sobolev 微分形式的局部有限元近似
DOI:
10.1051/m2an/2021034
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Licht, Martin W.
中科院分区:
文献类型:
--
作者:
Gawlik, Evan;Holst, Michael J.;Licht, Martin W.
We address fundamental aspects in the approximation theory of vector-valued finite element methods, using finite element exterior calculus as a unifying framework. We generalize the Clément interpolant and the Scott-Zhang interpolant to finite element differential forms, and we derive a broken Bramble-Hilbert lemma. Our interpolants require only minimal smoothness assumptions and respect partial boundary conditions. This permits us to state local error estimates in terms of the mesh size. Our theoretical results apply to curl-conforming and divergence-conforming finite element methods over simplicial triangulations.