Geometry of free loci and factorization of noncommutative polynomials
Geometry of free loci and factorization of noncommutative polynomials
复制标题
自由轨迹的几何和非交换多项式的因式分解
DOI:
10.1016/j.aim.2018.04.007
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发表时间:
2017
影响因子:
1.7
通讯作者:
Jurij Volčič
中科院分区:
文献类型:
--
作者:
J. Helton;I. Klep;Jurij Volčič
The free singularity locus of a noncommutative polynomial f is defined to be the sequence of hypersurfaces Z n (f)={X∈ M n (k) g: det f (X)= 0}. The main theorem of this article shows that f is irreducible if and only if Z n (f) is eventually irreducible. A key step in the proof is an irreducibility result for linear pencils. Arising from this is a free singularity locus Nullstellensatz for noncommutative polynomials. Apart from consequences to factorization in a free algebra, the paper also discusses its applications to invariant subspaces in perturbation theory and linear matrix inequalities in real algebraic geometry.
影响因子:
1.3
作者:
Agler, Jim
通讯作者:
Agler, Jim