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math.CO2026
On the nonnegativity of monomial immanants for hook partitions
Xiangshuai Dong, Tingzeng Wu, Xing Gao
Let be an real matrix and let be a partition of . Let be the class function dual to the Young permutation character, and let $$ ϕ^λ[A] = \sum_…
math.CO2026
Solution to an open problem on the computational complexity of immanant
Xiangshuai Dong, Tingzeng Wu, Xing Gao
Immanants are a class of generalized matrix functions associated with the irreducible characters of the symmetric group. Bürgisser [SIAM J. Comput., 30 (2000), pp. 1023--1040] prov…
math.RA2026
Disuccessors, Gröbner-Shirshov bases and free L-dendriform algebras
Huhu Zhang, Xing Gao, Yuanyuan Zhang
In this paper, we prove respectively that the disuccessor operations on the associative operad $\as$, the Lie operad $\lie$, and the pre-Lie operad $\prelie$ preserve Gröbner-Shirs…