Ky Fan's Best Approximation Theorem [chapter]

Sankatha Singh, Bruce Watson, Pramila Srivastava
1997 Fixed Point Theory and Best Approximation: The KKM-map Principle  
In this paper we give Ky Fan's best approximation theorem and then illustrate a few applications where we derive results in fixed point theory, approximation theory, and variational inequalities.
doi:10.1007/978-94-015-8822-5_2 fatcat:73jpzrifnngldoxa7q2bores7u