Journal of Inequalities and Applications 
Volume 2006 (2006), Article ID 93532, 14 pages
doi:10.1155/JIA/2006/93532

On D-preinvex-type functions

Jian-Wen Peng1,2 and Dao-Li Zhu1

 1Department of Management Science, School of Management, Fudan University, Shanghai 200433, China
2College of Mathematics and Computer Science, Chongqing Normal University, Chongqing 400047, China
Received 7 April 2006; Revised 10 July 2006; Accepted 26 July 2006

Abstract

Some properties of D-preinvexity for vector-valued functions are given and interrelations among D-preinvexity, D-semistrict preinvexity, and D-strict preinvexity for vector-valued functions are discussed.