Title of article :
On co-Farthest Points in Normed Linear Spaces
Author/Authors :
Mazaheri, H. Faculty of Mathematics - Yazd University , Moosavi, S. M. Faculty of Mathematics - Vali-e-asr University of Rafsanjan , Bizhanzadeh, Z. Faculty of Mathematics - Yazd University , Dehghan, M. A. Faculty of Mathematics - Vali-e-asr University of Rafsanjan
Abstract :
In this paper, we consider the concepts co-farthest points in normed linear spaces. At first, we defi ne farthest points, farthest orthogonality in normed linear spaces. Then we de fine co-farthest points, co-remotal sets, co-uniquely sets and co-farthest maps. We shall prove some theorems about co-farthest points, co-remotal sets. We obtain a necessary and coeficient conditions about co-farthest points and dual spaces.
Keywords :
Farthest points , Co-farthest points , Co-farthest map
Journal title :
نظريه تقريب و كاربردهاي آن
