Curves and surfaces
 Responsibility
 Marco Abate, Francesca Tovena ; [translated by Daniele A. Gewurz].
 Uniform Title
 Curve e superfici. English
 Digital
 text file
 Imprint
 Milano : Springer, ©2012.
 Physical description
 1 online resource (xiii, 390 pages) : illustrations
 Series
 Unitext ; 55.
Online
More options
Description
Creators/Contributors
 Author/Creator
 Abate, Marco, 1962
 Contributor
 Tovena, Francesca.
Contents/Summary
 Bibliography
 Includes bibliographical references and index.
 Contents

 Local theory of curves
 Global theory of plane curves
 Local theory of surfaces
 Curvatures
 Geodesics
 The GaussBonnet theorem
 Global theory of surfaces.
 Publisher's summary

The book provides an introduction to Differential Geometry of Curves and Surfaces. The theory of curves starts with a discussion of possible definitions of the concept of curve, proving in particular the classification of 1dimensional manifolds. We then present the classical local theory of parametrized plane and space curves (curves in ndimensional space are discussed in the complementary material): curvature, torsion, Frenet's formulas and the fundamental theorem of the local theory of curves. Then, after a selfcontained presentation of degree theory for continuous selfmaps of the circumference, we study the global theory of plane curves, introducing winding and rotation numbers, and proving the Jordan curve theorem for curves of class C2, and Hopf theorem on the rotation number of closed simple curves. The local theory of surfaces begins with a comparison of the concept of parametrized (i.e., immersed) surface with the concept of regular (i.e., embedded) surface. We then develop the basic differential geometry of surfaces in R3: definitions, examples, differentiable maps and functions, tangent vectors (presented both as vectors tangent to curves in the surface and as derivations on germs of differentiable functions; we shall consistently use both approaches in the whole book) and orientation. Next we study the several notions of curvature on a surface, stressing both the geometrical meaning of the objects introduced and the algebraic/analytical methods needed to study them via the Gauss map, up to the proof of Gauss' Teorema Egregium. Then we introduce vector fields on a surface (flow, first integrals, integral curves) and geodesics (definition, basic properties, geodesic curvature, and, in the complementary material, a full proof of minimizing properties of geodesics and of the HopfRinow theorem for surfaces). Then we shall present a proof of the celebrated GaussBonnet theorem, both in its local and in its global form, using basic properties (fully proved in the complementary material) of triangulations of surfaces. As an application, we shall prove the PoincareHopf theorem on zeroes of vector fields. Finally, the last chapter will be devoted to several important results on the global theory of surfaces, like for instance the characterization of surfaces with constant Gaussian curvature, and the orientability of compact surfaces in R3.
(source: Nielsen Book Data)
Subjects
Bibliographic information
 Publication date
 2012
 Series
 Unitext, 20385722 ; 55
 ISBN
 9788847019416 (electronic bk.)
 8847019419 (electronic bk.)
 9788847019409
 8847019400
 DOI
 10.1007/9788847019416