1University of Isfahan, Isfahan, 81745-163, Iran
2University of Isfahan and Sheikhbahaee University, Isfahan, Iran
*Corresponding author Email: jzaf@zafarani.ir
We give a second-order characterization for invex functions by using the Clarke subdif-ferentials, analogous to the positive semidefinite property for convex functions. Furthermore, some applications of these characterizations in optimization problems are obtained.
Invexity, Second-order characterization, Second-order optimality conditions, Clarke subdifferential, 47J05, 90C33