摘要研讨椭圆边值问题的Galerkin法，并对导数作出最小二乘法处理从而得到超收敛结果。Studying the Galerkin Method of elliptic boundary value problem,superconvergent results can be obtained when derivatives are processed with least-square method.
1Lin, Q., Lu, T. and Shen, S. M. Maximum norm estimate, extrapolation and optimal point of stresses for finite element methods on strongly regular triangulation[J] .J .comp. Math, 1983, ( 1 ) :376 - 383.
2O.C. Zienkiewicz and J. Z. Zhu. The superconvergence patch recovery and a posterior error estimates[J]. Int. J. Nu-mer. Methods Engrg,33:1331 - 1382,1992.
3朱起定 林群.有限元超收敛理论[M].湖南科学技术出版社,1989..
4Douglas, J. Jr, Dupont, T. and Wahlbin, L. The stability in of L2 the L2 projection into finite element function spaces[J]. Numer. Math. 23: 193 - 197,1974.#The Survival Probability in Compound Poisson Risk Model
