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dc.contributorMulti-disciplinary Studiesen_US
dc.contributorDepartment of Applied Mathematicsen_US
dc.creatorWong, Chong-yung-
dc.identifier.urihttps://theses.lib.polyu.edu.hk/handle/200/1267-
dc.languageEnglishen_US
dc.publisherHong Kong Polytechnic University-
dc.rightsAll rights reserveden_US
dc.titleTwo variational problems in classical differential geometryen_US
dcterms.abstractThis dissertation deals with the following two simple variational problems in classical differential geometry: (a) The Brachistochrone problem on the sphere and the cone (b) Geodesic problems on tubes. Chapters 1 to 3 are devoted to introducing the preliminary results in differential geometry necessary for the discussions of the problems arising in subsequent chapters. In Chapters 4, the classical Brachistochrone problem on some special surfaces is studied. It is shown that the solution of the Brachistochrone problem can be expressed in terms of elliptic integrals. In Chapter 5, geodesics on tubular surfaces such as the torus and the helical tube are studied. Applying the theory of Clairaut relation, we show that the solutions to the geodesic problem over a torus can be fully understood qualitatively. As for the geodesic problem over a helical tube, a careful analysis of the geodesic equations leads to a similar characterization of the solutions. It is hoped that this investigation can serve as simple models to tackle difficult problems in real-life situations, such as determination of yarn shapes and the DNA helix.en_US
dcterms.extentiii, 66 leaves : ill. ; 30 cmen_US
dcterms.isPartOfPolyU Electronic Thesesen_US
dcterms.issued2000en_US
dcterms.educationalLevelAll Masteren_US
dcterms.educationalLevelM.Sc.en_US
dcterms.LCSHGeometry, Differentialen_US
dcterms.LCSHHong Kong Polytechnic University -- Dissertationsen_US
dcterms.accessRightsrestricted accessen_US

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