Deprecated: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 135] in /var/www/html/w/includes/Debug/MWDebug.php on line 372
Representing kernels of perturbations of Toeplitz operators by backward shift-invariant subspaces - MaRDI portal

Deprecated: Use of MediaWiki\Skin\SkinTemplate::injectLegacyMenusIntoPersonalTools was deprecated in Please make sure Skin option menus contains `user-menu` (and possibly `notifications`, `user-interface-preferences`, `user-page`) 1.46. [Called from MediaWiki\Skin\SkinTemplate::getPortletsTemplateData in /var/www/html/w/includes/Skin/SkinTemplate.php at line 691] in /var/www/html/w/includes/Debug/MWDebug.php on line 372

Deprecated: Use of MediaWiki\Skin\BaseTemplate::getPersonalTools was deprecated in 1.46 Call $this->getSkin()->getPersonalToolsForMakeListItem instead (T422975). [Called from Skins\Chameleon\Components\NavbarHorizontal\PersonalTools::getHtml in /var/www/html/w/skins/chameleon/src/Components/NavbarHorizontal/PersonalTools.php at line 66] in /var/www/html/w/includes/Debug/MWDebug.php on line 372

Deprecated: Use of QuickTemplate::(get/html/text/haveData) with parameter `personal_urls` was deprecated in MediaWiki Use content_navigation instead. [Called from MediaWiki\Skin\QuickTemplate::get in /var/www/html/w/includes/Skin/QuickTemplate.php at line 131] in /var/www/html/w/includes/Debug/MWDebug.php on line 372

Representing kernels of perturbations of Toeplitz operators by backward shift-invariant subspaces

From MaRDI portal
Publication:6329713

DOI10.1007/S00020-020-02592-7arXiv1911.10072MaRDI QIDQ6329713

Author name not available (Why is that?)

Publication date: 22 November 2019

Abstract: It is well known that the kernel of a Toeplitz operator is nearly invariant under the backward shift S∗. This paper shows that kernels of finite-rank perturbations of Toeplitz operators are nearly S∗-invariant with finite defect. This enables us to apply a recent theorem by Chalendar--Gallardo--Partington to represent the kernel in terms of backward shift-invariant subspaces, which we identify in several important cases.





Mathematics Subject Classification ID

No records found.








This page was built for publication: Representing kernels of perturbations of Toeplitz operators by backward shift-invariant subspaces

Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q6329713)

Retrieved from "https://mardi.schubotz.org/w/index.php?title=Publication:6329713&oldid=35928623"
Powered by MediaWiki