Regularity of quasi-symbolic and bracket powers of Borel type ideals

In this paper, we show that the regularity of the q-th quasi-symbolic power I^{((q))} and the regularity of the q-th bracket power I^{[q]} of a monomial ideal of Borel type I, satisfy the relations reg(I^{((q))})\le q reg(I), respectively reg(I^{[q])}\ge q reg(I). Also, we give an upper bound for...

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Main Author: Mircea Cimpoeas
Format: Article
Language:English
Published: Conspress 2014-05-01
Series:Romanian Journal of Mathematics and Computer Science
Subjects:
Online Access:http://www.rjm-cs.ro/Cimpoeas-2014.pdf
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author Mircea Cimpoeas
author_facet Mircea Cimpoeas
author_sort Mircea Cimpoeas
collection DOAJ
description In this paper, we show that the regularity of the q-th quasi-symbolic power I^{((q))} and the regularity of the q-th bracket power I^{[q]} of a monomial ideal of Borel type I, satisfy the relations reg(I^{((q))})\le q reg(I), respectively reg(I^{[q])}\ge q reg(I). Also, we give an upper bound for reg(I^{[q]}).
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spelling doaj.art-821d58d8200f4a38ab37775109d6e9192022-12-22T00:54:28ZengConspressRomanian Journal of Mathematics and Computer Science2247-689X2014-05-01417380Regularity of quasi-symbolic and bracket powers of Borel type idealsMircea Cimpoeas0Simion Stoilow Institute of Mathematics of the Romanian Academy, E-mail: mircea.cimpoeas@imar.roIn this paper, we show that the regularity of the q-th quasi-symbolic power I^{((q))} and the regularity of the q-th bracket power I^{[q]} of a monomial ideal of Borel type I, satisfy the relations reg(I^{((q))})\le q reg(I), respectively reg(I^{[q])}\ge q reg(I). Also, we give an upper bound for reg(I^{[q]}).http://www.rjm-cs.ro/Cimpoeas-2014.pdfMonomial idealsBorel type idealsMumford-Castelnuovo regularity
spellingShingle Mircea Cimpoeas
Regularity of quasi-symbolic and bracket powers of Borel type ideals
Romanian Journal of Mathematics and Computer Science
Monomial ideals
Borel type ideals
Mumford-Castelnuovo regularity
title Regularity of quasi-symbolic and bracket powers of Borel type ideals
title_full Regularity of quasi-symbolic and bracket powers of Borel type ideals
title_fullStr Regularity of quasi-symbolic and bracket powers of Borel type ideals
title_full_unstemmed Regularity of quasi-symbolic and bracket powers of Borel type ideals
title_short Regularity of quasi-symbolic and bracket powers of Borel type ideals
title_sort regularity of quasi symbolic and bracket powers of borel type ideals
topic Monomial ideals
Borel type ideals
Mumford-Castelnuovo regularity
url http://www.rjm-cs.ro/Cimpoeas-2014.pdf
work_keys_str_mv AT mirceacimpoeas regularityofquasisymbolicandbracketpowersofboreltypeideals