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arXiv 1601.00463math.SPmath-phmath.MP
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关于Wiener-Hopf算子迹公式中的一个系数

On a coefficient in trace formulas for Wiener-Hopf operators

A. V. Sobolev

摘要:

设$a = a(ξ), ξ\in\mathbb R,$是一个在无穷远处快速递减的光滑函数。对Wiener-Hopf算子$W(a)$(符号为$a$)和光滑函数$g:\mathbb C\to~\mathbb C$,H. Widom于1982年建立了以下跟踪公式:\[ {\rm tr}\bigl(g\bigl(W(a)\bigr) - W(g\circ a)\bigr) = \mathcal B(a; g), \],其中$\mathcal B(a; g)$根据函数$a$和$g$显式给出。本文在假定$a$为实值函数的条件下,分析了一类非光滑函数$g$的系数$\mathcal B(a; g)$.一个这样的函数的代表性示例是具有一些$γ\in (0, 1]$的$g(t) = |t|^γ$。

英文摘要:

Let $a = a(ξ), ξ\in\mathbb R,$ be a smooth function quickly decreasing at infinity. For the Wiener-Hopf operator $W(a)$ with the symbol $a$, and a smooth function $g:\mathbb C\to~\mathbb C$, H. Widom in 1982 established the following trace formula: \[ {\rm tr}\bigl(g\bigl(W(a)\bigr) - W(g\circ a)\bigr) = \mathcal B(a; g), \] where $\mathcal B(a; g)$ is given explicitly in terms of the functions $a$ and $g$. The paper analyses the coefficient $\mathcal B(a; g)$ for a class of non-smooth functions $g$ assuming that $a$ is real-valued. A representative example of one such function is $g(t) = |t|^γ$ with some $γ\in (0, 1]$.

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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