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arXiv 0905.0443math.FAmath-phmath.CAmath.MP
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具有Fisher-Hartwig奇性的Toeplitz、Hankel和Toeplitz+Hankel行列式的渐近性

Asymptotics of Toeplitz, Hankel, and Toeplitz+Hankel determinants with Fisher-Hartwig singularities

P. Deift, A. Its, I. Krasovsky

摘要:

本文研究了在光滑背景下符号具有Fisher-Hartwig奇异性的n维Toeplitz行列式在n中的渐近性。我们证明了Basor和Tracy所证明的一般非退化渐近行为。我们还得到了有限区间上Hankel行列式的渐近性以及Toeplitz+Hankel型行列式的渐近性。我们的分析是基于使用黎曼-希尔伯特方法的单位圆上的正交多项式的相关系统的研究。

英文摘要:

We study the asymptotics in n for n-dimensional Toeplitz determinants whose symbols possess Fisher-Hartwig singularities on a smooth background. We prove the general non-degenerate asymptotic behavior as conjectured by Basor and Tracy. We also obtain asymptotics of Hankel determinants on a finite interval as well as determinants of Toeplitz+Hankel type. Our analysis is based on a study of the related system of orthogonal polynomials on the unit circle using the Riemann-Hilbert approach.

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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