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arXiv 2609.28773math.AP

Garding 算子的对偶性与一个 GM/AM 型新不等式

Duality for Garding operators and a new inequality of GM/AM type

F. Reese Harvey, H. Blaine Lawson

AI总结:

本文针对 Garding 算子建立新的对偶定理,利用对偶算子证明 GM/AM 型新不等式,并改进 Guo-Phong-Tong 引理。

AI中文摘要:

本文研究 Garding Dirichlet 算子以及 Garding 多项式理论。Garding Dirichlet 算子是那些由对称 $n \times n$ 多项式空间 $S(n)$ 上的齐次多项式产生的算子,这些多项式关于任何正定矩阵都是双曲的。(特别地,${\mathbb R}^n$ 上任何关于 $({\mathbb R_+})^n$ 中元素双曲的多项式,都能以多种方式在 $S(n)$ 上产生一个 Garding 算子。)本文发展了一个新的对偶定理,并给出了许多特例和例子。Garding 算子 $g$ 的对偶 $g^*$ 被用来证明关于 $g$ 的一个新的基本不等式。作为最终应用,改进了 Guo-Phong-Tong 的一个重要引理。

英文摘要:

This article concerns Garding Dirichlet operators, and also the theory of Garding polynomials. Garding Dirichlet operators are those which arise from homogeneous polynomials on the space S(n) of symmetric $n \times n$ polynomials, which are hyperbolic with respect to any positive definite matrix. (In particular, any polynomial on ${\mathbb R}^n$, which is hyperbolic with respect to elements in $({\mathbb R_+})^n$, gives rise to a Garding operator on S(n), in many ways.) Here a new duality theorem is developed with many special cases and examples. The dual $g^*$ of a Garding operator $g$ is used to prove a new basic inequality for $g$. An important Lemma of Guo-Phong-Tong is improved upon as a final application.

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