I. (Y) CONDITION AND WEAK APPROXIMATION Let X be a separable reflexive Banach space, X~* its dual space, D(?) X a bounded open subset, and【, 】denote the dual operation between X and X~*.
文摘I. (Y) CONDITION AND WEAK APPROXIMATION Let X be a separable reflexive Banach space, X~* its dual space, D(?) X a bounded open subset, and【, 】denote the dual operation between X and X~*.
