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Digraphs of real-orthogonal upper Hessenberg matrices
Xinze Li, Simone SeveriniWhich directed graphs arise as the zero / non-zero pattern of an orthogonal upper Hessenberg matrix — and why the answer is a subset of .
- Comments:
- 43 files · 293 declarations · no sorry · 1106 edges (read from source) · submitted August 3, 2026 · counted 2026-10-10 · Publication details
- Subjects:
- linear-algebradigraphshessenberg
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