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Geometry IV: Non-regular Riemannian Geometry: Encyclopaedia of Mathematical Sciences, cartea 70

Editat de Yu. G. Reshetnyak Traducere de E. Primrose Contribuţii de V.N. Berestovskij, I.G. Nikolaev
en Limba Engleză Hardback – 21 oct 1993
The book contains a survey of research on non-regular Riemannian geome­ try, carried out mainly by Soviet authors. The beginning of this direction oc­ curred in the works of A. D. Aleksandrov on the intrinsic geometry of convex surfaces. For an arbitrary surface F, as is known, all those concepts that can be defined and facts that can be established by measuring the lengths of curves on the surface relate to intrinsic geometry. In the case considered in differential is defined by specifying its first geometry the intrinsic geometry of a surface fundamental form. If the surface F is non-regular, then instead of this form it is convenient to use the metric PF' defined as follows. For arbitrary points X, Y E F, PF(X, Y) is the greatest lower bound of the lengths of curves on the surface F joining the points X and Y. Specification of the metric PF uniquely determines the lengths of curves on the surface, and hence its intrinsic geometry. According to what we have said, the main object of research then appears as a metric space such that any two points of it can be joined by a curve of finite length, and the distance between them is equal to the greatest lower bound of the lengths of such curves. Spaces satisfying this condition are called spaces with intrinsic metric. Next we introduce metric spaces with intrinsic metric satisfying in one form or another the condition that the curvature is bounded.
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Specificații

ISBN-13: 9783540547013
ISBN-10: 3540547010
Pagini: 270
Ilustrații: VII, 252 p.
Dimensiuni: 155 x 235 x 20 mm
Greutate: 0.54 kg
Ediția:1993
Editura: Springer Berlin, Heidelberg
Colecția Springer
Seria Encyclopaedia of Mathematical Sciences

Locul publicării:Berlin, Heidelberg, Germany

Public țintă

Research

Cuprins

I. Two-Dimensional Manifolds of Bounded Curvature.- II. Multidimensional Generalized Riemannian Spaces.- Author Index.