joint essential spectrum 联合本质谱
Taylor essential spectrum Taylor本质谱
fredholm essential spectrum fredholm本质谱
schechter essential spectrum schechter本质谱
In this paper,we shall mainly study the essential spectrum of the laplacian on a Riemannian manifold with a pole. There are three sections in this paper.
在本文中,我们主要研究了带有极点的黎曼流形上本质谱的问题,共分三节。
参考来源 - 一类黎曼流形上拉普拉斯算子的本质谱In this article, we study the problems on perturbations of spectrum of 2x2 operator matrix, especially 2×2 upper triangular operator matrix, such as left (right) spectrum, left(right) essential spectrum and left (right) Weyl spectrum.
本文研究了2×2算子矩阵，特别是2×2上三角算子矩阵的谱扰动问题，如左(右)谱，左(右)本性谱及左(右)Weyl谱。
参考来源 - 算子矩阵的谱扰动·2,447,543篇论文数据，部分数据来源于NoteExpress
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In Sect. 4.3.4 we show that the Dirac operator in an external field has the same essential spectrum as the free Dirac operator provided the potential vanishes at infinity.
在4.3.4节，我们证明了狄拉克算子在外场中有着对应着无穷远处时零势能极限的自由狄拉克算子的相同的本质谱。
The essential theory, Raman gain spectrum, gain characteristics, the configuration and pump sources of the FRA are analyzed.
研究FRA的基本原理，喇曼增益谱，增益特性和结构模型，介绍FRA的泵浦源；
The essential difference is that the spectrum analyzer, being designed for laboratory use, is designed to cover an extremely wide frequency range with widely adjustable tuning range, bandwidth, etc.
区别在于频谱分析仪被设计成是实验室使用，设计成是带有很大可调范围和带宽等并覆盖非常大频率范围的仪器。
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