The mathematical theory of obstacle problems has been extensively researched over the last years. The obstacle problem is a typical example of the elliptic variational inequality. Many important problems, such as the torsion of an elastic-plastic cylinder, the Stefan problem can be formulated by transformation to an obstacle problem. This book aims at the theoretical research and the numerical analysis of elliptic obstacle problems.

About the Author

Yuxia Tong, Jiantao Gu and Xiujuan Xu are teachers of Hebei United University in China, who are now engaged in research work of elliptic equations and related problems.

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