scholarly journals Local–Global Minimum Property in Unconstrained Minimization Problems

2013 ◽  
Vol 162 (1) ◽  
pp. 34-46 ◽  
Author(s):  
Pál Burai
Keyword(s):  
Global Minimum ◽  
Unconstrained Minimization ◽  
Minimization Problems

scholarly journals VECTOR-VALUED IMPLICIT LAGRANGIAN FOR SYMMETRIC CONE COMPLEMENTARITY PROBLEMS

2009 ◽  
Vol 26 (02) ◽  
pp. 199-233 ◽  
Author(s):  
LINGCHEN KONG ◽  
LEVENT TUNÇEL ◽  
NAIHUA XIU
Keyword(s):  
Complementarity Problems ◽  
Unconstrained Minimization ◽  
Symmetric Cone ◽  
Merit Function ◽  
The Past ◽  
Minimization Problems ◽  
Nonnegative Orthant ◽  
Complementarity Function ◽  
Necessary And Sufficient ◽  
Vector Valued

The implicit Lagrangian was first proposed by Mangasarian and Solodov as a smooth merit function for the nonnegative orthant complementarity problem. It has attracted much attention in the past ten years because of its utility in reformulating complementarity problems as unconstrained minimization problems. In this paper, exploiting the Jordan-algebraic structure, we extend it to the vector-valued implicit Lagrangian for symmetric cone complementary problem (SCCP), and show that it is a continuously differentiable complementarity function for SCCP and whose Jacobian is strongly semismooth. As an application, we develop the real-valued implicit Lagrangian and the corresponding smooth merit function for SCCP, and give a necessary and sufficient condition for the stationary point of the merit function to be a solution of SCCP. Finally, we show that this merit function can provide a global error bound for SCCP with the uniform Cartesian P-property.

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