Poincaré constants for finite element stars
Poincaré constants for finite element stars
复制标题
有限元星体的庞加莱常数
DOI:
10.1093/imanum/drr011
复制
发表时间:
2012
影响因子:
2.1
通讯作者:
R. Verfürth
中科院分区:
文献类型:
--
作者:
A. Veeser;R. Verfürth
We derive sharp and explicit upper bounds for possibly weighted Poincaré constants of finite element stars. The latter are star-shaped domains that consist of a finite number of nonoverlapping simplices or parallelepipeds which all share a common vertex. Bounds for Poincaré constants are needed in deriving error estimates for quasi-interpolation operators and a posteriori upper bounds.