Best approximations and fixed points of nonexpansive maps in hilbert spaces sehie park
Sehie Park, Sehie Park, S. P. Singh, B. Watson, T. E. Williamson · Numerical Functional Analysis and Optimization · 1997
We obtain best approximation and fixed point theorems on nonexpansive maps f from a closed convex (not necessarily bounded) subset into a whole Hilbert space. Many boundary conditions for existence of fixed points are collected. Finally, we construct approximating sequences to those fixed points.