Results 11 to 20 of about 2,136 (139)
Reconstruction of rational ruled surfaces from their silhouettes [PDF]
Journal of Symbolic Computation, 2021 We provide algorithms to reconstruct rational ruled surfaces in three-dimensional projective space from the “apparent contour” of a single projection to the projective plane.
Vršek, Jan +3 more
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Covering rational ruled surfaces [PDF]
Mathematics of Computation, 2017 We present an algorithm that covers any given rational ruled surface with two rational parametrizations. In addition, we present an algorithm that transforms any rational surface parametrization into a new rational surface parametrization without affine ...
Villarino Cabellos, Carlos +2 more
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On Donaldson polynomials of rational ruled surfaces
form, 1996 In this paper, we study rank-2 stable vector bundles over rational ruled surfaces with c-suitable polarization. We show that some coefficients of Donaldson polynomials are zero.
Li, Wei Ping
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Implicitization of rational ruled surfaces with µ-bases [PDF]
Journal of Symbolic Computation, 2007 J. Symbolic Comput. 44 (2009), 5, 479—489.International audienceChen, Sederberg, and Zheng introduced the notion of a µ-basis for a rational ruled surface in Chen et al. (2001) and showed that its resultant is the implicit equation of the surface, if the
Dohm, Marc, Marc Dohm
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The Gaussian map for rational ruled surfaces [PDF]
Transactions of the American Mathematical Society, 1992 In this paper the Gaussian map Φ :
Duflot, Jeanne, Miranda, Rick
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Coverings of Rational Ruled Normal Surfaces [PDF]
, 2018 In this work we use arithmetic, geometric, and combinatorial techniques to compute the cohomology of Weil divisors of a special class of normal surfaces, the so-called rational ruled toric surfaces. These computations are used to study the topology of cyclic coverings of such surfaces ramified along Q-normal crossing divisors.
Bartolo, Enrique Artal +2 more
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Tropical M\"obius strips and ruled surfaces [PDF]
, 2023 We consider the enumeration of tropical curves in M\"obius strips for two different lattice structures and relate them to the enumeration of curves in two rational ruled surfaces over a complex elliptic curve.
Blomme, Thomas, Schleis, Victoria
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Bounding families of ruled surfaces [PDF]
, 1996 First published in Proceedings of the American Mathematical Society in Volume 124, Number 10, October 1996, published by the American MathematicalIn this paper we provide a sharp bound for the dimension of a family of ruled surfaces of degree d in P3 K ...
Gallego Rodrigo, Francisco Javier +2 more
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Revisiting the μ-basis of a rational ruled surface
Journal of Symbolic Computation, 2003 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, W, Chen, F
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A symbolic-numeric approach for parametrizing ruled surfaces [PDF]
, 2020 This paper presents symbolic algorithms to determine whether a given surface (implicitly or parametrically defined) is a rational ruled surface and find a proper parametrization of the ruled surface.
Pérez Díaz, Sonia, Shen, Li-Yong
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