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Abstract:

In this paper we show that a surface in P3 parametrized over a 2-dimensional toric variety T can be represented by a matrix of linear syzygies if the base points are finite in number and form locally a complete intersection. This constitutes a direct generalization of the corresponding result over P2 established in [Busé, L., Jouanolou, J.-P., 2003. J. Algebra 265 (1), 312-357] and [Busé, L., Chardin, M.J., 2005. Symbolic Comput. 40 (4-5), 1150-1168]. Exploiting the sparse structure of the parametrization, we obtain significantly smaller matrices than in the homogeneous case and the method becomes applicable to parametrizations for which it previously failed. We also treat the important case T = P1 × P1 in detail and give numerous examples. © 2009 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Matrix representations for toric parametrizations
Autor:Botbol, N.; Dickenstein, A.; Dohm, M.
Filiación:Departamento de Matemática, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Pab.I, 1428 Buenos Aires, Argentina
Institut de Mathématiques de Jussieu, Université de P. et M. Curie, Paris VI, France
Laboratoire J. A. Dieudonné, Université de Nice - Sophia Antipolis, Parc Valrose, 06108 Nice Cedex 2, France
Palabras clave:Approximation complex; Implicitization; Matrix representation; Rational surface; Syzygy; Toric variety; Approximation complex; Implicitization; Matrix representation; Rational surface; Syzygy; Toric variety; Matrix algebra
Año:2009
Volumen:26
Número:7
Página de inicio:757
Página de fin:771
DOI: http://dx.doi.org/10.1016/j.cagd.2009.03.005
Título revista:Computer Aided Geometric Design
Título revista abreviado:Comput Aided Geom Des
ISSN:01678396
CODEN:CAGDE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01678396_v26_n7_p757_Botbol

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Citas:

---------- APA ----------
Botbol, N., Dickenstein, A. & Dohm, M. (2009) . Matrix representations for toric parametrizations. Computer Aided Geometric Design, 26(7), 757-771.
http://dx.doi.org/10.1016/j.cagd.2009.03.005
---------- CHICAGO ----------
Botbol, N., Dickenstein, A., Dohm, M. "Matrix representations for toric parametrizations" . Computer Aided Geometric Design 26, no. 7 (2009) : 757-771.
http://dx.doi.org/10.1016/j.cagd.2009.03.005
---------- MLA ----------
Botbol, N., Dickenstein, A., Dohm, M. "Matrix representations for toric parametrizations" . Computer Aided Geometric Design, vol. 26, no. 7, 2009, pp. 757-771.
http://dx.doi.org/10.1016/j.cagd.2009.03.005
---------- VANCOUVER ----------
Botbol, N., Dickenstein, A., Dohm, M. Matrix representations for toric parametrizations. Comput Aided Geom Des. 2009;26(7):757-771.
http://dx.doi.org/10.1016/j.cagd.2009.03.005