arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1207.3159math.AGmath.OC
收藏

双曲多项式与广义Clifford代数

Hyperbolic Polynomials and Generalized Clifford Algebras

Tim Netzer, Andreas Thom

摘要:

本文考虑了将双曲锥实现为谱面,即实现为正半定矩阵的锥的线性切片的问题。广义的拉克斯猜想指出,这总是可能的。我们使用广义Clifford代数的一个新的方法来解决这个问题。我们的主要结果是:如果-1不是双曲多项式的Clifford代数中的埃尔米特平方和,则它的双曲锥是谱面体的。我们的结果也有计算应用,因为这个充分条件可以检查一个单一的半定程序。

英文摘要:

We consider the problem of realizing hyperbolicity cones as spectrahedra, i.e. as linear slices of cones of positive semidefinite matrices. The generalized Lax conjecture states that this is always possible. We use generalized Clifford algebras for a new approach to the problem. Our main result is that if -1 is not a sum of hermitian squares in the Clifford algebra of a hyperbolic polynomial, then its hyperbolicity cone is spectrahedral. Our result also has computational applications, since this sufficient condition can be checked with a single semidefinite program.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑