Real-part largest-eigenvalue conjecture for the permanent matrix
Let be the set of positive semidefinite Hermitian matrices. For , let be obtained by deleting row and column , and define by
Let denote the maximum eigenvalue of the symmetric part of over , formed by taking the real part of each entry of . Real-part eigenvalue conjecture. For every ,
The supplied text does not give evidence resolving this newly introduced conjecture, so its database status remains open.
References
Primary source
Léo Pioge, Kamil K. Pietrasz, Benoit Seron, Leonardo Novo and Nicolas J. Cerf, “A logical implication between two conjectures on matrix permanents”, arXiv:2508.00111 (2025).
Progress summary
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