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Pathology of essential spectra of elliptic problems in periodic family of beads threaded by a spoke thinning at infinity
Rendiconti Lincei-Matematica e Applicazioni ( IF 0.6 ) Pub Date : 2021-02-15 , DOI: 10.4171/rlm/921
Sergei Nazarov 1 , Jari Taskinen 2
Affiliation  

We construct ‘‘almost periodic’’ unbounded domains, where a large class of elliptic spectral problems have essential spectra possessing peculiar structure: they consist of monotone, non-negative sequences of isolated points and thus have infinitely many gaps.

中文翻译:

椭圆形问题的基本频谱的病理学,该问题由周期性辐条变细在无限远处串接的周期珠子

我们构造了``几乎周期的''无界域,其中一大类椭圆光谱问题具有具有特殊结构的基本光谱:它们由孤立点的单调,非负序列组成,因此具有无限多个间隙。
更新日期:2021-02-16
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