## Optimality conditions for rank-constrained matrix optimization.(English)Zbl 1438.90272

Summary: In this paper, we comprehensively study optimality conditions for rank-constrained matrix optimization (RCMO). By calculating the Clarke tangent and normal cones to a rank-constrained set, along with the given Fréchet, Mordukhovich normal cones, we investigate four kinds of stationary points of the RCMO and analyze the relations between each stationary point and local/global minimizer of the RCMO. Furthermore, the second-order optimality condition of the RCMO is achieved with the help of the Clarke tangent cone.

### MSC:

 90C26 Nonconvex programming, global optimization 90C30 Nonlinear programming 90C46 Optimality conditions and duality in mathematical programming

MSCRA_rankmin
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### References:

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