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Titlebook: Elementary Differential Geometry; Andrew Pressley Textbook 20011st edition Springer-Verlag London 2001 Curves and Surfaces.Euclidean Geome

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樓主: DART
11#
發(fā)表于 2025-3-23 13:02:26 | 只看該作者
Lexikon der Wirtschaftsinformatikt (see Theorem 10.4) that a surface patch is determined up to a rigid motion of .. by its first and second fundamental forms, just as a unit-speed plane curve is determined up to a rigid motion by its signed curvature.
12#
發(fā)表于 2025-3-23 15:07:32 | 只看該作者
https://doi.org/10.1007/978-3-211-75607-2me information as the two principal curvatures, they turn out to have greater geometrical significance. The gaussian curvature, in particular, has the remarkable property, established in Chapter 10, that it is unchanged when the surface is bent without stretching, a property that is not shared by th
13#
發(fā)表于 2025-3-23 21:29:05 | 只看該作者
Sabine Krist Doz. Mag. pharm. DDr.s in a surface is always a geodesic. We shall actually begin by giving a quite different definition of geodesics, since this definition is easier to work with. We give various methods of finding the geodesics on surfaces, before finally making contact with the idea of shortest paths towards the end
14#
發(fā)表于 2025-3-24 01:13:50 | 只看該作者
Lexikon der soziologischen Werkeigher dimension, that of finding a surface of minimal area with a fixed curve as its boundary. This is called .. The solutions to Plateau’s problem turn out to be surfaces whose mean curvature vanishes everywhere. The study of these so-called minimal surfaces was initiated by Euler and Lagrange in t
15#
發(fā)表于 2025-3-24 04:16:08 | 只看該作者
16#
發(fā)表于 2025-3-24 09:52:53 | 只看該作者
17#
發(fā)表于 2025-3-24 12:12:34 | 只看該作者
Regine Witkowski,Otto Prokop,Eva Ullriche ‘global’ shape of the curve. In this chapter, we discuss some global results about curves. The most famous, and perhaps the oldest, of these is the ‘isoperimetric inequality’, which relates the length of certain ‘closed’ curves to the area they contain.
18#
發(fā)表于 2025-3-24 18:40:45 | 只看該作者
19#
發(fā)表于 2025-3-24 19:03:54 | 只看該作者
20#
發(fā)表于 2025-3-25 01:50:38 | 只看該作者
How Much Does a Curve Curve?,curve is not contained in a straight line (so that straight lines have zero curvature), and the torsion measures the extent to which a curve is not contained in a plane (so that plane curves have zero torsion). It turns out that the curvature and torsion together determine the shape of a curve.
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