图书简介
The book intends to give a modern presentation of the classical Markov and Lagrange spectrum, which are fundamental objects from the theory of Diophantine approximations and of their several generalizations related to Dynamical Systems and Differential Geometry. Besides presenting many classical results, the book includes several topics of recent research on the subject, connecting several fields of Mathematics — Number Theory, Dynamical Systems and Fractal Geometry.
It includes topics as:
• Classical results on the Markov and Lagrange spectra: the Markov theorem on the lower spectra
• The fractal geometry of the complement of the Lagrange spectrum in the Markov spectrum
• Continuity of Hausdorff dimension of the spectra intersected with half-lines: the classical spectra and dynamical generalizations
• Intervals in the classical spectra and dynamical generalizations
• The beginning of the spectra: discrete initial part and first accumulation points (in the classical and dynamical cases)
• Markov and Lagrange spectra for Teichmüller dynamics
Key Features:
o Presents classical results from a modern viewpoint
o Presents recent research results in a very classical subject
o Combines ideas from several fields of Mathematics
Classical Lagrange and Markov spectra; Some Results About the Intermediate Portions of the Classical Spectra; Continuity of Hausdorff Dimension Across Classical and Dynamical Spectra; Beginning of Dynamical Lagrange and Markov Spectra; Intervals and Hall Rays in Dynamical Lagrange and Markov Spectra; Appendices: Proof of Hurwitz Theorem; Proof of Euler’s Remark; Continued Fractions, Binary Quadratic Forms, and Markov Spectrum; Freiman’s Rightmost Gap on Markov Spectrum; Soft Bounds on the Hausdor Dimension of Dynamical Cantor Sets; Modulus of Continuity of the Dimension Across Classical Spectra; Closedness of the Dynamical Spectra Associated to Horseshoes;
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