TY - JOUR T1 - Least-Squares Mixed Finite Element Method for Saddle-Point Problem AU - Wang , Lie-Heng AU - Duan , Huo-Yuan JO - Journal of Computational Mathematics VL - 4 SP - 353 EP - 364 PY - 2000 DA - 2000/08 SN - 18 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jcm/9048.html KW - least-squares method, mixed finite element approximation, saddle-point problem. AB -

In this paper, a least-squares mixed finite element method for the solution of the primal saddle-point problem is developed. It is proved that the approximate problem is consistent ellipticity in the conforming finite element spaces with only the discrete BB-condition needed for a smaller auxiliary problem. The abstract error estimate is derived.