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arXiv 1302.4722math.FAmath.RA
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*-代数中的实零点与 *-理想

Real Nullstellensatze and *-ideals in *-algebras

Jakob Cimpric, J. William Helton, Scott McCullough, Christopher Nelson

摘要:

设F表示实域或复域。自由 *-代数F<x,x*>中g自由非交换变元及其形式伴随的理想I是 *-理想,如果I = I*.当一个实 *-理想有有限余维时,它满足一个强零星定理。如果没有有限余维假设,有这样的理想的例子,不满足,非常宽松的解释,任何零stelleneirs。F&lt;x,x*&gt;中的多项式p是解析的,如果它是仅关于变量{x}的多项式;即如果p在F中<x>。如本文所示,由解析多项式生成的 *-理想确实满足自然的零星定理,而由齐次解析多项式生成的 *-理想具有特别简单的描述。本文还连接的结果在这里为 *-理想的文献零星的左理想在 *-代数一般,特别是在F&lt;x,x*&gt;。它也发展了伴随的一般理论的 *-理想在一般 *-代数。

英文摘要:

Let F denote either the real or complex field. An ideal I in the free *-algebra F<x,x*> in g freely noncommuting variables and their formal adjoints is a *-ideal if I = I*. When a real *-ideal has finite codimension, it satisfies a strong Nullstellensatz. Without the finite codimension assumption, there are examples of such ideals which do not satisfy, very liberally interpreted, any Nullstellensatz. A polynomial p in F<x,x*> is analytic if it is a polynomial in the variables {x} only; that is if p in F<x>. As shown in this article, *-ideals generated by analytic polynomials do satisfy a natural Nullstellensatz and those generated by homogeneous analytic polynomials have a particularly simple description. The article also connects the results here for *-ideals to the literature on Nullstellensatz for left ideals in *-algebras generally and in F<x,x*> in particular. It also develops the concomitant general theory of *-ideals in general *-algebras.

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。

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