Results 121 to 130 of about 2,136 (139)

On the Moduli of Curves on Rational Ruled Surfaces

American Journal of Mathematics, 1987
Here the author studies the coarse moduli space of curves on a rational geometrically ruled surface \(F_ e\). For an open very explicit subset of these curves the author gets a fine moduli scheme. The key tool is the geometric invariant theory for actions of non reductive groups developed by the author in Compos. Math. 55, 63-87 (1985; Zbl 0577.14037).
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On Finite Morphisms of Rational Ruled Surfaces

Mathematische Nachrichten, 1992
The author investigates morphisms related to the rational ruled surfaces \(F_ e= \mathbb{P}({\mathcal O}_{\mathbb{P}^ 1}\oplus{\mathcal O}_{\mathbb{P}^ 1}(-e))\) of invariant \(e \geq 0\) defined over an algebraically closed field \(k\), in the following situations: (i) morphisms \(\varphi:F_{e'} \to F_ e\) whose image is not contained in a fibre, (ii)
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Computing self-intersection curves of rational ruled surfaces

Computer Aided Geometric Design, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiaohong Jia, Falai Chen, Jiansong Deng
exaly   +4 more sources

Rational and Ruled Surfaces

2018
This chapter completes the proofs of McDuff’s theorems on rational and ruled symplectic 4-manifolds stated in the introduction.
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Reparametrization of a rational ruled surface using the μ-basis

Computer Aided Geometric Design, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Efficient reparametrization into standard form and algorithmic characterization of rational ruled surfaces

Computer Aided Geometric Design, 2022
Juan G Alcazar, Carlos Hermoso
exaly  

Ruled surfaces and rational surfaces

1994
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Ruled Surfaces for Rationalization and Design in Architecture

ACADIA proceedings, 2010
Simon Flory, Helmut Pottmann
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Revisiting the -basis of a rational ruled surface

Journal of Symbolic Computation, 2003
Wenping Wang, Falai Chen
exaly  

Reparametrization of a rational ruled surface using the -basis

Computer Aided Geometric Design, 2003
Falai Chen
exaly