Sums of Reciprocals of Fractional Parts and Multiplicative Diophantine Approximation

Sums of Reciprocals of Fractional Parts and Multiplicative Diophantine Approximation PDF Author: Victor Beresnevich
Publisher: American Mathematical Soc.
ISBN: 1470440954
Category : Education
Languages : en
Pages : 92

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Book Description

Sums of Reciprocals of Fractional Parts and Multiplicative Diophantine Approximation

Sums of Reciprocals of Fractional Parts and Multiplicative Diophantine Approximation PDF Author: Victor Beresnevich
Publisher: American Mathematical Soc.
ISBN: 1470440954
Category : Education
Languages : en
Pages : 92

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Book Description


Dynamics and Analytic Number Theory

Dynamics and Analytic Number Theory PDF Author: Dzmitry Badziahin
Publisher: Cambridge University Press
ISBN: 1316817776
Category : Mathematics
Languages : en
Pages : 341

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Book Description
Written by leading experts, this book explores several directions of current research at the interface between dynamics and analytic number theory. Topics include Diophantine approximation, exponential sums, Ramsey theory, ergodic theory and homogeneous dynamics. The origins of this material lie in the 'Dynamics and Analytic Number Theory' Easter School held at Durham University in 2014. Key concepts, cutting-edge results, and modern techniques that play an essential role in contemporary research are presented in a manner accessible to young researchers, including PhD students. This book will also be useful for established mathematicians. The areas discussed include ubiquitous systems and Cantor-type sets in Diophantine approximation, flows on nilmanifolds and their connections with exponential sums, multiple recurrence and Ramsey theory, counting and equidistribution problems in homogeneous dynamics, and applications of thin groups in number theory. Both dynamical and 'classical' approaches towards number theoretical problems are also provided.

Dynamics, Geometry, Number Theory

Dynamics, Geometry, Number Theory PDF Author: David Fisher
Publisher: University of Chicago Press
ISBN: 022680416X
Category : Mathematics
Languages : en
Pages : 573

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Book Description
This definitive synthesis of mathematician Gregory Margulis’s research brings together leading experts to cover the breadth and diversity of disciplines Margulis’s work touches upon. This edited collection highlights the foundations and evolution of research by widely influential Fields Medalist Gregory Margulis. Margulis is unusual in the degree to which his solutions to particular problems have opened new vistas of mathematics; his ideas were central, for example, to developments that led to the recent Fields Medals of Elon Lindenstrauss and Maryam Mirzhakhani. Dynamics, Geometry, Number Theory introduces these areas, their development, their use in current research, and the connections between them. Divided into four broad sections—“Arithmeticity, Superrigidity, Normal Subgroups”; “Discrete Subgroups”; “Expanders, Representations, Spectral Theory”; and “Homogeneous Dynamics”—the chapters have all been written by the foremost experts on each topic with a view to making them accessible both to graduate students and to experts in other parts of mathematics. This was no simple feat: Margulis’s work stands out in part because of its depth, but also because it brings together ideas from different areas of mathematics. Few can be experts in all of these fields, and this diversity of ideas can make it challenging to enter Margulis’s area of research. Dynamics, Geometry, Number Theory provides one remedy to that challenge.

Global Smooth Solutions for the Inviscid SQG Equation

Global Smooth Solutions for the Inviscid SQG Equation PDF Author: Angel Castro
Publisher: American Mathematical Soc.
ISBN: 1470442140
Category : Mathematics
Languages : en
Pages : 89

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Book Description
In this paper, the authors show the existence of the first non trivial family of classical global solutions of the inviscid surface quasi-geostrophic equation.

Dynamics Near the Subcritical Transition of the 3D Couette Flow I: Below Threshold Case

Dynamics Near the Subcritical Transition of the 3D Couette Flow I: Below Threshold Case PDF Author: Jacob Bedrossian
Publisher: American Mathematical Soc.
ISBN: 1470442175
Category : Mathematics
Languages : en
Pages : 154

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Book Description
The authors study small disturbances to the periodic, plane Couette flow in the 3D incompressible Navier-Stokes equations at high Reynolds number Re. They prove that for sufficiently regular initial data of size $epsilon leq c_0mathbf {Re}^-1$ for some universal $c_0 > 0$, the solution is global, remains within $O(c_0)$ of the Couette flow in $L^2$, and returns to the Couette flow as $t rightarrow infty $. For times $t gtrsim mathbf {Re}^1/3$, the streamwise dependence is damped by a mixing-enhanced dissipation effect and the solution is rapidly attracted to the class of ``2.5 dimensional'' streamwise-independent solutions referred to as streaks.

The Riesz Transform of Codimension Smaller Than One and the Wolff Energy

The Riesz Transform of Codimension Smaller Than One and the Wolff Energy PDF Author: Benjamin Jaye
Publisher: American Mathematical Soc.
ISBN: 1470442132
Category : Mathematics
Languages : en
Pages : 97

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Book Description
Fix $dgeq 2$, and $sin (d-1,d)$. The authors characterize the non-negative locally finite non-atomic Borel measures $mu $ in $mathbb R^d$ for which the associated $s$-Riesz transform is bounded in $L^2(mu )$ in terms of the Wolff energy. This extends the range of $s$ in which the Mateu-Prat-Verdera characterization of measures with bounded $s$-Riesz transform is known. As an application, the authors give a metric characterization of the removable sets for locally Lipschitz continuous solutions of the fractional Laplacian operator $(-Delta )^alpha /2$, $alpha in (1,2)$, in terms of a well-known capacity from non-linear potential theory. This result contrasts sharply with removability results for Lipschitz harmonic functions.

Conformal Graph Directed Markov Systems on Carnot Groups

Conformal Graph Directed Markov Systems on Carnot Groups PDF Author: Vasileios Chousionis
Publisher: American Mathematical Soc.
ISBN: 1470442159
Category : Mathematics
Languages : en
Pages : 153

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Book Description
The authors develop a comprehensive theory of conformal graph directed Markov systems in the non-Riemannian setting of Carnot groups equipped with a sub-Riemannian metric. In particular, they develop the thermodynamic formalism and show that, under natural hypotheses, the limit set of an Carnot conformal GDMS has Hausdorff dimension given by Bowen's parameter. They illustrate their results for a variety of examples of both linear and nonlinear iterated function systems and graph directed Markov systems in such sub-Riemannian spaces. These include the Heisenberg continued fractions introduced by Lukyanenko and Vandehey as well as Kleinian and Schottky groups associated to the non-real classical rank one hyperbolic spaces.

Explicit Arithmetic of Jacobians of Generalized Legendre Curves Over Global Function Fields

Explicit Arithmetic of Jacobians of Generalized Legendre Curves Over Global Function Fields PDF Author: Lisa Berger
Publisher: American Mathematical Soc.
ISBN: 1470442191
Category : Mathematics
Languages : en
Pages : 131

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Book Description
The authors study the Jacobian $J$ of the smooth projective curve $C$ of genus $r-1$ with affine model $y^r = x^r-1(x + 1)(x + t)$ over the function field $mathbb F_p(t)$, when $p$ is prime and $rge 2$ is an integer prime to $p$. When $q$ is a power of $p$ and $d$ is a positive integer, the authors compute the $L$-function of $J$ over $mathbb F_q(t^1/d)$ and show that the Birch and Swinnerton-Dyer conjecture holds for $J$ over $mathbb F_q(t^1/d)$.

Filtrations and Buildings

Filtrations and Buildings PDF Author: Christophe Cornut
Publisher: American Mathematical Soc.
ISBN: 1470442213
Category : Mathematics
Languages : en
Pages : 150

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Book Description
The author constructs and studies a scheme theoretical version of the Tits vectorial building, relates it to filtrations on fiber functors, and uses them to clarify various constructions pertaining to affine Bruhat-Tits buildings, for which he also provides a Tannakian description.

The Mother Body Phase Transition in the Normal Matrix Model

The Mother Body Phase Transition in the Normal Matrix Model PDF Author: Pavel M. Bleher
Publisher: American Mathematical Soc.
ISBN: 1470441845
Category : Mathematics
Languages : en
Pages : 144

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Book Description
In this present paper, the authors consider the normal matrix model with cubic plus linear potential.