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Solution uniqueness of convex optimization problems via the radial cone

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arxiv 2401.10346 v1 pith:RNGHMZQQ submitted 2024-01-18 math.OC

classification math.OC
keywords solutionconeoptimizationproblemsradialuniquenesscharacterizationsconvex
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In this paper, we mainly study solution uniqueness of some convex optimization problems. Our characterizations of solution uniqueness are in terms of the radial cone. This approach allows us to know when a unique solution is a strong solution or even a tilt-stable one without checking second-order information. Consequently, we apply our theory to low-rank optimization problems. The radial cone is fully calculated in this case and numerical experiments show that our characterizations are sharp.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Stable Recovery of Regularized Linear Inverse Problems

    math.OC 2024-12 conditional novelty 7.0 of 10

    A signal is stably recoverable from noisy linear measurements if and only if the kernel of the measurement operator intersects the tangent cone of the conjugate-subdifferential image only at zero.

  2. Subspace decomposition in regularized least-squares: solution properties, restricted coercivity and beyond

    math.OC 2025-07 accept novelty 6.0 of 10

    A subspace decomposition gives explicit conjugate-form formulas for the solution set of regularized least squares, yielding unified existence, compactness, and uniqueness conditions.

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