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Author

Dong-Wei Li

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Preprint Sep 2026

Rank Stabilization for Sparse Coordinate Completion of Unit-Norm Tight Frames

We determine generic completion-fiber dimensions for unit-norm tight frames when each partially observed column has exactly two missing coordinates. We work on the complex algebraic variety defined by the real frame equations. The missing coordinate pairs form a labelled multigraph. For every $d\ge4$ and every frame le...

Dong-Wei Li · 0 citations
Preprint Sep 2026

Sharp Conditioning for Matrix Recovery by Finite Affine Orbits

Let \(q=p^h\) be an odd prime power, and let the affine group \(\mathbb F_q\rtimes\mathbb F_q^\times\) act through its canonical \((q-1)\)-dimensional irreducible representation. Qualitative matrix recovery for these rank-one orbits is known. We determine sharp lower singular-value bounds for explicit real generating w...

Dong-Wei Li · 0 citations

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