SIAM Journal on Applied Mathematics


Dynamics of Director Fields

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Article Data

History

Submitted: 16 July 1990
Accepted: 03 January 1991
Published online: 05 July 2006

Publication Data

ISSN (print): 0036-1399
ISSN (online): 1095-712X
CODEN: smjmap

An asymptotic equation for weakly nonlinear hyperbolic waves governed by variational principles is derived and analyzed. The equation is used to study a nonlinear instability in the director field of a nematic liquid crystal. It is shown that smooth solutions of the asymptotic equation break down in finite time. Also constructed are weak solutions of the equation that are continuous despite the fact that their spatial derivative blows up.

Copyright © 1991 Society for Industrial and Applied Mathematics

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(2011) GLOBAL EXISTENCE AND BLOW-UP PHENOMENA FOR THE PERIODIC HUNTER–SAXTON EQUATION WITH WEAK DISSIPATION. Journal of Nonlinear Mathematical Physics 18:1, 139-149. Crossref
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(2010) Solutions of Jimbo-Miwa Equation and Konopelchenko-Dubrovsky Equations. Acta Applicandae Mathematicae 112:2, 181-203. Crossref
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(2010) Lipschitz metric for the Hunter–Saxton equation. Journal de Mathématiques Pures et Appliquées 94:1, 68-92. Crossref
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(2010) Bifurcations and exact bounded travelling wave solutions for a partial differential equation. Nonlinear Analysis: Real World Applications 11:1, 364-371. Crossref
(2010) The Generalized Hunter–Saxton System. SIAM Journal on Mathematical Analysis 42:3, 1286-1304. Abstract | PDF (250 KB) 
(2010) ON THE GEODESIC FLOW ON THE GROUP OF DIFFEOMORPHISMS OF THE CIRCLE WITH A FRACTIONAL SOBOLEV RIGHT-INVARIANT METRIC. Journal of Nonlinear Mathematical Physics 17:1, 7-11. Crossref
(2009) Deltons, peakons and other traveling-wave solutions of a Camassa–Holm hierarchy. Physics Letters A 373:29, 2454-2460. Crossref
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(2009) Multi-soliton and multi-cuspon solutions of a Camassa–Holm hierarchy and their interactions. Journal of Physics A: Mathematical and Theoretical 42:5, 055203. Crossref
(2009) Local Discontinuous Galerkin Method for the Hunter–Saxton Equation and Its Zero-Viscosity and Zero-Dispersion Limits. SIAM Journal on Scientific Computing 31:2, 1249-1268. Abstract | PDF (582 KB) 
(2009) On the N=2 supersymmetric Camassa–Holm and Hunter–Saxton equations. Journal of Mathematical Physics 50:1, 012704. Crossref
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(2008) On an integrable two-component Camassa–Holm shallow water system. Physics Letters A 372:48, 7129-7132. Crossref
(2008) Generalized Hunter–Saxton equation and the geometry of the group of circle diffeomorphisms. Mathematische Annalen 342:3, 617-656. Crossref
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(2008) Poisson structure of a modified Hunter–Saxton equation. Journal of Physics A: Mathematical and Theoretical 41:28, 285207. Crossref
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(2008) A Contact Linearization Problem for Monge-Ampère Equations and Laplace Invariants. Acta Applicandae Mathematicae 101:1-3, 177-189. Crossref
(2008) The Hunter–Saxton Equation: A Geometric Approach. SIAM Journal on Mathematical Analysis 40:1, 266-277. Abstract | PDF (182 KB) 
(2008) Continuous and Discontinuous Piecewise Linear Solutions of the Linearly Forced Inviscid Burgers Equation. Journal of Nonlinear Mathematical Physics 15:sup3, 264-276. Crossref
(2008) Algebraic Discretization of the Camassa-Holm and Hunter-Saxton Equations. Journal of Nonlinear Mathematical Physics 15:sup2, 1-12. Crossref
(2007) Riemannian geometry on the diffeomorphism group of the circle. Arkiv för Matematik 45:2, 297-325. Crossref
(2007) Diffractive nonlinear geometrical optics for variational wave equations and the Einstein equations. Communications on Pure and Applied Mathematics 60:10, 1522-1557. Crossref
(2007) The Hunter–Saxton equation describes the geodesic flow on a sphere. Journal of Geometry and Physics 57:10, 2049-2064. Crossref
(2007) Generalized Fourier transform for the Camassa–Holm hierarchy. Inverse Problems 23:4, 1565-1597. Crossref
(2007) On nonlocal symmetries of some shallow water equations. Journal of Physics A: Mathematical and Theoretical 40:17, 4467-4476. Crossref
(2007) The inverse spectral problem for the discrete cubic string. Inverse Problems 23:1, 99-121. Crossref
(2006) Cusp and loop soliton solutions of short-wave models for the Camassa–Holm and Degasperis–Procesi equations. Physics Letters A 359:5, 451-457. Crossref
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(2006) Conservative Solutions to a Nonlinear Variational Wave Equation. Communications in Mathematical Physics 266:2, 471-497. Crossref
(2006) Weak solutions to a nonlinear variational wave equation and some related problems. Applications of Mathematics 51:4, 427-466. Crossref
(2006) SHORT-TIME EXISTENCE FOR SCALE-INVARIANT HAMILTONIAN WAVES. Journal of Hyperbolic Differential Equations 03:02, 247-267. Crossref
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(2006) V ect ( S 1 ) Action on Pseudodifferential Symbols on S 1 and (Noncommutative) Hydrodynamic Type Systems. Journal of Nonlinear Mathematical Physics 13:4, 549-565. Crossref
(2006) Wave Breaking in a Class of Nonlocal Dispersive Wave Equations. Journal of Nonlinear Mathematical Physics 13:3, 441-466. Crossref
(2005) Can we always distinguish between positive and negative hierarchies?. Journal of Physics A: Mathematical and General 38:18, L301-L306. Crossref
(2005) The Gurevich–Zybin system. Journal of Physics A: Mathematical and General 38:17, 3823-3840. Crossref
(2005) On the local and nonlocal Camassa–Holm hierarchies. Journal of Mathematical Physics 46:4, 042704. Crossref
(2005) Weak solutions to a nonlinear variational wave equation with general data. Annales de l'Institut Henri Poincaré C, Analyse non linéaire 22:2, 207-226. Crossref
(2005) Global Solutions of the Hunter--Saxton Equation. SIAM Journal on Mathematical Analysis 37:3, 996-1026. Abstract | PDF (287 KB) 
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(2004) On the Structure of Solutions to the Periodic Hunter--Saxton Equation. SIAM Journal on Mathematical Analysis 36:1, 272-283. Abstract | PDF (154 KB) 
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(2003) On singularity of a nonlinear variational sine-Gordon equation. Journal of Differential Equations 189:1, 183-198. Crossref
(2003) Discrete Lagrangian systems on the Virasoro group and Camassa Holm family. Nonlinearity 16:2, 683-688. Crossref
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(2002) Lagrangian time-discretization of the Hunter–Saxton equation. Physics Letters A 304:5-6, 157-167. Crossref
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