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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Universidad Católica del Norte, Departamento de Matemáticas
2018
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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 |
_version_ |
1718439832211947520 |