| Article ID: | iaor1995752 |
| Country: | United States |
| Volume: | 19 |
| Issue: | 3 |
| Start Page Number: | 659 |
| End Page Number: | 675 |
| Publication Date: | Aug 1994 |
| Journal: | Mathematics of Operations Research |
| Authors: | Luc D.T., Thera M. |
A new concept of derivative is introduced reflecting the global, rather than the local, behavior of a given function. Basic properties and calculus rules for this derivative are provided. Then they are applied to establish some characterizations of convex functions and some optimality conditions in mathematical programming.