Exact counterexample to Drury's Conjecture 3 on permanents of real positive semidefinite matrices: witness and verification code
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This deposit contains an explicit counterexample to Conjecture 3 of S. W. Drury,"A counterexample to a question of Bapat & Sunder", Mathematical Inequalities &Applications 21 (2018) 517-520 and scripts to verify.
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2026-07-25
