Pathology of essential spectra of elliptic problems in periodic family of beads threaded by a spoke thinning at infinity
type: Item
instance of: scholarly article
title: Pathology of essential spectra of elliptic problems in periodic family of beads threaded by a spoke thinning at infinity
zbMATH Open document ID: 1467.35226
DOI: 10.4171/RLM/921
author: J. Taskinen
author: Sergei A. Nazarov
published in: Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Serie IX. Rendiconti Lincei. Matematica e Applicazioni
publication date: 2021-07-02T00:00:00Z
review text: Summary: 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.
Mathematics Subject Classification ID: 35P05
Mathematics Subject Classification ID: 35J57
zbMATH DE Number: 7367175
zbMATH Keywords: essential spectrum
zbMATH Keywords: wave-guide
zbMATH Keywords: spectral gap
zbMATH Keywords: almost periodic unbounded domains
Wikidata QID: Q114021393
MaRDI profile type: Publication
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full work available at URL: https://doi.org/10.4171/rlm/921
OpenAlex ID: W3129346019
description: scientific article; zbMATH DE number 7367175