EntityQ5944865· pop 5· linked from 6 articlesHunter–Saxton equationSign in to saveintegrable PDEConnectionsInternational Standard Book NumberEntitydigital object identifierEntitykinetic energyEntityOCLC, Inc.Entitymathematical physicsEntityPierre-Gilles de GennesEntitymetric spaceEntitybibcodeEntityunit circleEntityQ118398Entityliquid crystalEntityvector fieldEntitypartial differential equationEntityif and only ifEntitygeodesic curveEntitysubgroupEntityLie groupEntityQ22908627Entityinner product spaceEntityEuler–Lagrange equationEntityCategoriesEquations of fluid dynamicsMathematical physicsNonlinear partial differential equationsSolitons