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  • Textbook
  • © 2013

Geometry of Continued Fractions

Authors:

  • New approach to the geometry of numbers, very visual and algorithmic
  • Numerous illustrations and examples
  • Problems for each chapter
  • Includes supplementary material: sn.pub/extras

Part of the book series: Algorithms and Computation in Mathematics (AACIM, volume 26)

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Table of contents (23 chapters)

  1. Front Matter

    Pages I-XVII
  2. Regular Continued Fractions

    1. Front Matter

      Pages 1-2
    2. Classical Notions and Definitions

      • Oleg Karpenkov
      Pages 3-18
    3. On Integer Geometry

      • Oleg Karpenkov
      Pages 19-31
    4. Geometry of Regular Continued Fractions

      • Oleg Karpenkov
      Pages 33-39
    5. Complete Invariant of Integer Angles

      • Oleg Karpenkov
      Pages 41-46
    6. Integer Trigonometry for Integer Angles

      • Oleg Karpenkov
      Pages 47-55
    7. Integer Angles of Integer Triangles

      • Oleg Karpenkov
      Pages 57-65
    8. Lagrange’s Theorem

      • Oleg Karpenkov
      Pages 87-97
    9. Gauss–Kuzmin Statistics

      • Oleg Karpenkov
      Pages 99-114
    10. Geometric Aspects of Approximation

      • Oleg Karpenkov
      Pages 115-136
    11. Extended Integer Angles and Their Summation

      • Oleg Karpenkov
      Pages 153-172
  3. Multidimensional Continued Fractions

    1. Front Matter

      Pages 183-184
    2. On Empty Simplices, Pyramids, Parallelepipeds

      • Oleg Karpenkov
      Pages 203-214
    3. Dirichlet Groups and Lattice Reduction

      • Oleg Karpenkov
      Pages 237-247

About this book

Traditionally a subject of number theory, continued fractions appear in dynamical systems, algebraic geometry, topology, and even celestial mechanics. The rise of computational geometry has resulted in renewed interest in multidimensional generalizations of continued fractions. Numerous classical theorems have been extended to the multidimensional case, casting light on phenomena in diverse areas of mathematics. This book introduces a new geometric vision of continued fractions. It covers several applications to questions related to such areas as Diophantine approximation, algebraic number theory, and toric geometry.

 

The reader will find an overview of current progress in the geometric theory of multidimensional continued fractions accompanied by currently open problems. Whenever possible, we illustrate geometric constructions with figures and examples. Each chapter has exercises useful for undergraduate or graduate courses.

Reviews

“Throughout the book many theorems are accompanied by constructive algorithms. Due to its rich content and connections to several parts of mathematics this volume will be of interest to graduate students and researchers not only in number theory and discrete geometry.” (C. Baxa, Monatshefte für Mathematik, Vo. 180, 2016)

“Karpenkov … begins with a distinctive treatment of continued fraction foundations emphasizing lattice geometry. One-dimensional continued fractions connect to two-dimensional lattices--very apt for illustration. … Summing Up: Recommended. Upper-division undergraduates through researchers/faculty.” (D. V. Feldman, Choice, Vol. 51 (10), June, 2014)

“The book is well written and is easy to read and navigate. … The book features a number of helpful illustrations and tables, a detailed index, and a large bibliography.This text is likely to become a valuable resource for researchers and students interested in discrete geometry and Diophantine approximations, as well as their rich interplay and many connections.” (Lenny Fukshansky, zbMATH, Vol. 1297, 2014)

Authors and Affiliations

  • Dept. of Mathematical Sciences, The University of Liverpool Dept. of Mathematical Sciences, Liverpool, United Kingdom

    Oleg Karpenkov

About the author

For different subjects contributed to this book, the author was awarded a Fellowship of the City of Paris (France), a Lise Meitner Fellowship (Austria) and the Moscow Mathematical Society Prize (Russia).

Bibliographic Information

Buy it now

Buying options

eBook USD 79.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book USD 99.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access