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arXiv 2210.06925math.AP
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各向异性Gelfand-Shilov波前集的传播

Propagation of anisotropic Gelfand-Shilov wave front sets

Patrik Wahlberg

摘要:

本文给出了具有Schwartz核的线性算子的各向异性Gelfand-Shilov波前集的传播的一个结果,它是Beurling型的Gelfand-Shilov超分布.该各向异性的波前集由与空间和频率变量相关的两个正参数来参数化。假设该算子的Schwartz核的各向异性Gelfand-Shilov波前集满足图型准则。结果被应用到一类发展方程,推广的薛定谔方程的自由粒子。拉普拉斯算子被一个由一个符号定义的部分微分算子代替,该符号是一个具有实系数和至少二阶的多项式。

英文摘要:

We show a result on propagation of the anisotropic Gelfand--Shilov wave front set for linear operators with Schwartz kernel which is a Gelfand--Shilov ultradistribution of Beurling type. This anisotropic wave front set is parametrized by two positive parameters relating the space and frequency variables. The anisotropic Gelfand--Shilov wave front set of the Schwartz kernel of the operator is assumed to satisfy a graph type criterion. The result is applied to a class of evolution equations that generalizes the Schrödinger equation for the free particle. The Laplacian is replaced by a partial differential operator defined by a symbol which is a polynomial with real coefficients and order at least two.

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