Sums of Hermitian Squares and the BMV Conjecture
Sums of Hermitian Squares and the BMV Conjecture
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Hermitian 平方和与 BMV 猜想
DOI:
10.1007/s10955-008-9632-x
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发表时间:
--
影响因子:
1.6
通讯作者:
M. Schweighofer
中科院分区:
文献类型:
--
作者:
I. Klep;M. Schweighofer
We show that all the coefficients of the polynomialare nonnegative wheneverm≤13 is a nonnegative integer andAandBare positive semidefinite matrices of the same size. This has previously been known only form≤7. The validity of the statement for arbitrarymhas recently been shown to be equivalent to the Bessis-Moussa-Villani conjecture from theoretical physics. In our proof, we establish a connection to sums of hermitian squares of polynomials in noncommuting variables and to semidefinite programming. As a by-product we obtain an example of a real polynomial in two noncommuting variables having nonnegative trace on all symmetric matrices of the same size, yet not being a sum of hermitian squares and commutators.
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影响因子:
1.1
作者:
Sabine Burgdorf
通讯作者:
Sabine Burgdorf
影响因子:
0.9
作者:
D. W. Lewis
通讯作者:
D. W. Lewis
DOI:
10.1088/0305-4470/13/10/012
发表时间:
1980
期刊:
Journal of Physics A
影响因子:
--
作者:
K. J. L. Couteur
通讯作者:
K. J. L. Couteur
影响因子:
1.8
作者:
P. Moussa
通讯作者:
P. Moussa
DOI:
10.1016/j.laa.2009.05.002
发表时间:
2007
期刊:
arXiv: Operator Algebras
影响因子:
--
作者:
P. Landweber;E. Speer
通讯作者:
E. Speer