%0 Journal Article
%T Tangent cones, starshape and convexity
%A J. M. Borwein
%J International Journal of Mathematics and Mathematical Sciences
%D 1978
%I Hindawi Publishing Corporation
%R 10.1155/s0161171278000460
%X In the last few years various infinite dimensional extensions to Krasnoselski's Theorem on starshaped sets [14] have been made. These began with a paper by Edelstein and Keener [8] and have culminated in the papers by Borwein, Edelstein and O'Brien [3] [4] by Edelstein, Keener and O'Brien [9] and finally by O'Brien [16].
%K tangent cones
%K pseudo tangent cones
%K starshape
%K convexity
%K functional conditions.
%U http://dx.doi.org/10.1155/S0161171278000460