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math.FA 1

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Entrywise preservers of sign regularity

math.FA · 2025-09-22 · unverdicted · novelty 7.0

Complete characterizations of entrywise preservers of sign regular and strictly sign regular rectangular matrices, with and without specified sign patterns.

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  • Entrywise preservers of sign regularity math.FA · 2025-09-22 · unverdicted · none · ref 9

    Complete characterizations of entrywise preservers of sign regular and strictly sign regular rectangular matrices, with and without specified sign patterns.