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When the sign pattern of a square matrix determines uniquely the sign pattern of its inverse

✍ Scribed by Carsten Thomassen

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 529 KB
Volume: 119
Category: Article
ISSN: 0024-3795
DOI: 10.1016/0024-3795(89)90066-9

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## Abstract The uniqueness of determination of a polyhedron homeomorphic to a bali by its edge graph is proved in the most general situation. Consequences are given that arise from this result in the inverse potential problem. Unsolved problems are formulated.