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» On the geometry of polar varieties
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SC
2004
ACM
14 years 1 months ago
GYRO: A 5-D Gyrokinetic-Maxwell Solver
GYRO solves the 5-dimensional gyrokinetic-Maxwell equations in shaped plasma geometry, using either a local (fluxtube) or global radial domain. It has been ported to a variety of...
Mark R. Fahey, Jeff Candy
CDC
2009
IEEE
176views Control Systems» more  CDC 2009»
14 years 8 days ago
Controllability of the rotation of a quantum planar molecule
Abstract— We consider the simplest model for controlling the rotation of a molecule by the action of an electric field, namely a quantum planar pendulum. This problem consists i...
Ugo V. Boscain, Thomas Chambrion, Paolo Mason, Mar...
COMPGEOM
2007
ACM
13 years 11 months ago
On the hardness of minkowski addition and related operations
For polytopes P, Q Rd we consider the intersection P Q; the convex hull of the union CH(P Q); and the Minkowski sum P + Q. We prove that given rational H-polytopes P1, P2, Q it...
Hans Raj Tiwary
CORR
2008
Springer
138views Education» more  CORR 2008»
13 years 7 months ago
The implicit equation of a canal surface
A canal surface is an envelope of a one parameter family of spheres. In this paper we present an efficient algorithm for computing the implicit equation of a canal surface generat...
Marc Dohm, Severinas Zube
JSC
2011
110views more  JSC 2011»
13 years 2 months ago
Computing symmetric rank for symmetric tensors
We consider the problem of determining the symmetric tensor rank for symmetric tensors with an algebraic geometry approach. We give algorithms for computing the symmetric rank for...
Alessandra Bernardi, Alessandro Gimigliano, Monica...