Geometry of Mobius Transformations: Elliptic, Parabolic and Hyperbolic Actions of Sl2(r) (with DVD-Rom) by Vladimir V Kisil (PDF)

Description

This book is a unique exposition of rich and inspiring geometries associated with Möbius transformations of the hypercomplex plane. The presentation is self-contained and based on the structural properties of the group SL2(R). Starting from elementary facts in group theory, the author unveils surprising new results about the geometry of circles, parabolas and hyperbolas, using an approach based on the Erlangen programme of F Klein, who defined geometry as a study of invariants under a transitive group action.The treatment of elliptic, parabolic and hyperbolic Möbius transformations is provided in a uniform way. This is possible due to an appropriate usage of complex, dual and double numbers which represent all non-isomorphic commutative associative two-dimensional algebras with unit. The hypercomplex numbers are in perfect correspondence with the three types of geometries concerned. Furthermore, connections with the physics of Minkowski and Galilean space-time are considered.

User’s Reviews

Editorial Reviews: From the Back Cover This book is a unique exposition of rich and inspiring geometries associated with M bius transformations of the hypercomplex plane. The presentation is self-contained and based on the structural properties of the group SL(2, R). Starting from elementary facts in group theory, the author unveiled surprising new results about geometry of circles, parabolas and hyperbolas, with the approach based on the Erlangen program of F Klein who defined geometry as a study of invariants under a transitive group action. The treatment of elliptic, parabolic and hyperbolic M bius transformations is provided in a uniform way. This is possible due to an appropriate usage of complex, dual and double numbers. They form three possible commutative associative two-dimensional algebras, which are in perfect correspondences with the three types of geometries concerned. Furthermore, connections with the physics of Minkowski and Galilean space-time are considered.

Reviews from Amazon users which were colected at the time this book was published on the website:

⭐This book is a wonderful read. This book exposes many exciting avenues of SL2(R) to be further explored by the reader.

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