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Article: Recognizing and parametrizing curves isomorphic to a line
Title | Recognizing and parametrizing curves isomorphic to a line |
---|---|
Authors | |
Keywords | Automorphisms Complexity Parametrization Plane Curves Polynomial Algebras |
Issue Date | 2007 |
Publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jsc |
Citation | Journal Of Symbolic Computation, 2007, v. 42 n. 7, p. 751-756 How to Cite? |
Abstract | Some time ago, Shpilrain and Yu reported an algorithm for deciding whether or not a polynomial p ∈ K [x, y] is a coordinate, or, equivalently, whether or not a plane curve p (x, y) = 0 is isomorphic to a line. Here K is any constructible field of characteristic 0. In this paper, we show that their algorithm requires O (n2) field operations, where n is the degree of a given polynomial. We also show how their algorithm can be used to find a polynomial parametrization of a plane curve p (x, y) = 0 which is isomorphic to a line. This requires O (n2 log2 n) field operations. © 2007 Elsevier Ltd. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/156192 |
ISSN | 2023 Impact Factor: 0.6 2023 SCImago Journal Rankings: 0.522 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lam, CM | en_US |
dc.contributor.author | Shpilrain, V | en_US |
dc.contributor.author | Yu, JT | en_US |
dc.date.accessioned | 2012-08-08T08:40:47Z | - |
dc.date.available | 2012-08-08T08:40:47Z | - |
dc.date.issued | 2007 | en_US |
dc.identifier.citation | Journal Of Symbolic Computation, 2007, v. 42 n. 7, p. 751-756 | en_US |
dc.identifier.issn | 0747-7171 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/156192 | - |
dc.description.abstract | Some time ago, Shpilrain and Yu reported an algorithm for deciding whether or not a polynomial p ∈ K [x, y] is a coordinate, or, equivalently, whether or not a plane curve p (x, y) = 0 is isomorphic to a line. Here K is any constructible field of characteristic 0. In this paper, we show that their algorithm requires O (n2) field operations, where n is the degree of a given polynomial. We also show how their algorithm can be used to find a polynomial parametrization of a plane curve p (x, y) = 0 which is isomorphic to a line. This requires O (n2 log2 n) field operations. © 2007 Elsevier Ltd. All rights reserved. | en_US |
dc.language | eng | en_US |
dc.publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jsc | en_US |
dc.relation.ispartof | Journal of Symbolic Computation | en_US |
dc.subject | Automorphisms | en_US |
dc.subject | Complexity | en_US |
dc.subject | Parametrization | en_US |
dc.subject | Plane Curves | en_US |
dc.subject | Polynomial Algebras | en_US |
dc.title | Recognizing and parametrizing curves isomorphic to a line | en_US |
dc.type | Article | en_US |
dc.identifier.email | Yu, JT:yujt@hku.hk | en_US |
dc.identifier.authority | Yu, JT=rp00834 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1016/j.jsc.2007.04.002 | en_US |
dc.identifier.scopus | eid_2-s2.0-34250684158 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-34250684158&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 42 | en_US |
dc.identifier.issue | 7 | en_US |
dc.identifier.spage | 751 | en_US |
dc.identifier.epage | 756 | en_US |
dc.identifier.isi | WOS:000248867600004 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Lam, CM=7402989820 | en_US |
dc.identifier.scopusauthorid | Shpilrain, V=6603904879 | en_US |
dc.identifier.scopusauthorid | Yu, JT=7405530208 | en_US |
dc.identifier.issnl | 0747-7171 | - |