Summary: J Glob Optim (2007) 39:473481
Sufficiency in multiobjective subset programming
involving generalized type-I functions
Izhar Ahmad · Sarita Sharma
Received: 24 March 2006 / Accepted: 12 February 2007 / Published online: 20 April 2007
© Springer Science+Business Media B.V. 2007
Abstract In this paper, sufficient optimality conditions for a multiobjective subset
programming problem are established under generalized (F, , , d)-type-I functions.
Keywords Efficient solutions · Generalized n-set convex functions · Sufficient
The concept of optimizing n-set functions was initially developed by Morris ,
whose results are confined only to set functions of a single set. Such type of pro-
gramming problems have various interesting applications in fluid flow , electrical
insulator design , regional design (districting, facility location, warehouse layout,
urban planning, etc.)[10,11], statistics [12,25] and optimal plasma confinement .
Corley  generalized the results of Morris  to n-set functions and discussed
optimality conditions and Lagrangian duality. Several authors have shown interest