Foundations of Computational Mathematics Optimal Stability and Eigenvalue Multiplicity
Foundations of Computational Mathematics Optimal Stability and Eigenvalue Multiplicity
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通讯作者:
J. V. Burke;A. S. Lewis;M. L. Overton
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作者:
J. V. Burke;A. S. Lewis;M. L. Overton
We consider the problem of minimizing over an affine set of square matrices the maximum of the real parts of the eigenvalues. Such problems are proto-typical in robust control and stability analysis. Under nondegeneracy conditions, we show that the multiplicities of the active eigenvalues at a critical matrix remain unchanged under small perturbations of the problem. Furthermore, each distinct active eigenvalue corresponds to a single Jordan block. This behavior is crucial for optimal-ity conditions and numerical methods. Our techniques blend nonsmooth optimization and matrix analysis.