The spectral function of an elliptic operator

The spectral function of an elliptic operator
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DOI:
10.1007/bf02391913
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发表时间:
1968-12
期刊:
影响因子:
3.7
通讯作者:
L. Hörmander
L. Hörmander
中科院分区:
数学1区
文献类型:
--
作者:
L. Hörmander

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本文给出了任意椭圆(伪)微分算子谱函数渐近公式中余项的最佳估计。这是通过对低频谱函数的傅里叶变换的奇异性的完整描述来实现的。
In this paper we shall obtain the best possible estimates for the remainder term in the asymptotic formula for the spectral function of an arbitrary elliptic (pseudo-)differential operator. This is achieved by means of a complete description of the singularities of the Fourier transform of the spectral function for low frequencies.