Course details
Semester
 Autumn 2021
 Monday, October 4th to Friday, December 10th
Hours
 Live lecture hours
 10
 Recorded lecture hours
 0
 Total advised study hours
 40
Timetable
 Wednesdays
 14:05  14:55 (UK)
Description
The course is an introduction to the theory of metric Diophantine approximation. This broad and topical area of number theory combines ideas from measure theory, fractal geometry, probability theory, ergodic theory and dynamical systems.
Even at the introductory level, the theory of metric Diophantine approximation naturally illustrates the interplay of different branches of mathematics.
A particular goal of the course is to bring to the forefront the classical and recent `transference' principles that `link' various aspects of the general theory.
For example, the classical Khintchine transference principle provides a link between the homogeneous and inhomogeneous theories.
On the other hand, the recent Mass Transference Principle provides a link between the Lebesgue and Hausdorff measure theories.
Another key goal is to discuss current topical areas of research.
This will involve discussing the fundamental conjectures of Littlewood and Schmidt in the theory of simultaneous Diophantine approximation.
 G.H. Hardy and E.M. Wright, The theory of numbers, Oxford University Press
 J.W.S. Cassels, An introduction to Diophantine approximation, Cambridge University Press
 W.J. LeVeque: Elementary Theory of Numbers, Addison Wesley Longman Publishing Co.
 W.M. Schmidt: Diophantine Approximation, Springer Verlag.
 Y. Bugeaud: Approximation by algebraic numbers, Cambridge University Press.
 G. Harman: Metric Number Theory, Oxford University Press.
 K. Falconer: Fractal Geometry, John Wiley and Sons Ltd.
 P. Mattila: Geometry of Sets and Measures in Euclidean Spaces, Cambridge University Press.
 J. Heinonen: Lectures on analysis on metric spaces, Springer Verlag.
Prerequisites
 A basic 2nd/3rd year course in Elementary Number Theory
 A basic course in Analysis
 A course in measure theory is not essential.
Syllabus
 Dirichlet's theorem in one and higher dimensions.
 Minkowski's theorem  the Geometry of Numbers.
 Inhomogeneous Diophantine approximation.
 Continued fractions and the Gauss map.
 Badly and well approximable numbers.
 Khintchine's Theorem  the Lebesgue measure theory.
 Removing monotonicity  the DuffinSchaeffer conjecture.
 Jarnik's Theorem  the Hausdorff measure theory.
 General frameworks  ubiquity, regular systems, Schmidt games
 Transference Principles.
 Intersecting Diophantine sets with manifolds and fractals.
 Rational points near manifolds.
Lecturers

SV
Professor Sanju Velani
 University
 University of York
 Role
 Main contact

VB
Professor Victor Beresnevich
 University
 University of York
Bibliography
No bibliography has been specified for this course.
Assessment
The assessment for this course will be released on Monday 10th January 2022 at 00:00 and is due in before Sunday 23rd January 2022 at 23:59.
Assessment for all MAGIC courses is via takehome exam which will be made available at the release date (the start of the exam period).
You will need to upload a PDF file with your own attempted solutions by the due date (the end of the exam period).
If you have kept uptodate with the course, the expectation is it should take at most 3 hoursâ€™ work to attain the pass mark, which is 50%.
Please note that you are not registered for assessment on this course.
Files
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Lectures
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