Cosine families of operators in a class of Fréchet spaces

Abstract: M. sova ((10)) proved that the infinitesimal generator of all uniformly continuous cosine family, of operators in Banach space, is a bounded operator. We show by counter-example that the result mentioned above is not true in general on Fréchet spaces, and we prove that the infinitesimal ge...

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Autores principales: Hassani,Rachid Ameziane, Blali,Aziz, Amrani,Abdelkhalek El, Moussaouja,Khalil
Lenguaje:English
Publicado: Universidad Católica del Norte, Departamento de Matemáticas 2018
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-09172018000100103
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spelling oai:scielo:S0716-091720180001001032018-03-13Cosine families of operators in a class of Fréchet spacesHassani,Rachid AmezianeBlali,AzizAmrani,Abdelkhalek ElMoussaouja,Khalil Strongly continuous cosine families Semi-groups of operators Locally convex space Quojection Fréchet space Abstract: M. sova ((10)) proved that the infinitesimal generator of all uniformly continuous cosine family, of operators in Banach space, is a bounded operator. We show by counter-example that the result mentioned above is not true in general on Fréchet spaces, and we prove that the infinitesimal generator of an uniformly continuous cosine family of operators in a class of Fréchet spaces (quojection) is necessarily continuous.info:eu-repo/semantics/openAccessUniversidad Católica del Norte, Departamento de MatemáticasProyecciones (Antofagasta) v.37 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-09172018000100103en10.4067/S0716-09172018000100103
institution Scielo Chile
collection Scielo Chile
language English
topic Strongly continuous cosine families
Semi-groups of operators
Locally convex space
Quojection Fréchet space
spellingShingle Strongly continuous cosine families
Semi-groups of operators
Locally convex space
Quojection Fréchet space
Hassani,Rachid Ameziane
Blali,Aziz
Amrani,Abdelkhalek El
Moussaouja,Khalil
Cosine families of operators in a class of Fréchet spaces
description Abstract: M. sova ((10)) proved that the infinitesimal generator of all uniformly continuous cosine family, of operators in Banach space, is a bounded operator. We show by counter-example that the result mentioned above is not true in general on Fréchet spaces, and we prove that the infinitesimal generator of an uniformly continuous cosine family of operators in a class of Fréchet spaces (quojection) is necessarily continuous.
author Hassani,Rachid Ameziane
Blali,Aziz
Amrani,Abdelkhalek El
Moussaouja,Khalil
author_facet Hassani,Rachid Ameziane
Blali,Aziz
Amrani,Abdelkhalek El
Moussaouja,Khalil
author_sort Hassani,Rachid Ameziane
title Cosine families of operators in a class of Fréchet spaces
title_short Cosine families of operators in a class of Fréchet spaces
title_full Cosine families of operators in a class of Fréchet spaces
title_fullStr Cosine families of operators in a class of Fréchet spaces
title_full_unstemmed Cosine families of operators in a class of Fréchet spaces
title_sort cosine families of operators in a class of fréchet spaces
publisher Universidad Católica del Norte, Departamento de Matemáticas
publishDate 2018
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-09172018000100103
work_keys_str_mv AT hassanirachidameziane cosinefamiliesofoperatorsinaclassoffrechetspaces
AT blaliaziz cosinefamiliesofoperatorsinaclassoffrechetspaces
AT amraniabdelkhalekel cosinefamiliesofoperatorsinaclassoffrechetspaces
AT moussaoujakhalil cosinefamiliesofoperatorsinaclassoffrechetspaces
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