TY - JOUR
T1 - Preconditioning of the Stiffness Matrix of Local Refined Triangulation
AU - Sheng Zhang
JO - Journal of Computational Mathematics
VL - 2
SP - 113
EP - 117
PY - 1994
DA - 1994/12
SN - 12
DO - http://doi.org/
UR - https://global-sci.org/intro/article_detail/jcm/9285.html
KW - 
AB - <p style="text-align: justify;">A preconditioning method for the finite element stiffness matrix is given in this paper. The triangulation is refined in a subregion; the preconditioning process is composed of resolution of two regular subproblems; the condition number of the preconditioned matrix is $O(1+log\frac{H}{h})$, where $H$ and $h$ are mesh sizes of the unrefined and local refined triangulation respectively.</p>