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Related papers: Open problems in geometry of continued fractions

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Deformation theory of complex manifolds is a classical subject with recent new advances in the noncompact case using both algebraic and analytic methods. In this note, we recall some concepts of the existing theory and introduce new notions…

Algebraic Geometry · Mathematics 2021-01-12 Edoardo Ballico , Elizabeth Gasparim , Francisco Rubilar

Many generalizations of continued fractions, where the reciprocal function has been replaced by a more general function, have been studied, and it is often asked whether such generalized expansions can have nice properties. For instance, we…

Number Theory · Mathematics 2007-05-23 Greg Martin

We show that a wide class of geometrically defined overdetermined semilinear partial differential equations may be explicitly prolonged to obtain closed systems. As a consequence, in the case of linear equations we extract sharp bounds on…

Differential Geometry · Mathematics 2008-11-26 Thomas Branson , Andreas Cap , Michael Eastwood , Rod Gover

Recently, W. M. Schmidt and L. Summerer developed a new theory called Parametric Geometry of Numbers which approximates the behaviour of the successive minima of a family of convex bodies in $\mathbb{R}^{n}$ related to the problem of…

Number Theory · Mathematics 2015-02-02 Aminata Dite Tanti Keita

We describe a database of 1779 continued fractions with polynomial coefficients, of which more than 1500 are new, both for interesting constants and for transcendental functions, and provide the database inside the \TeX\ source of the…

Number Theory · Mathematics 2025-08-12 Henri Cohen

In this work we study qualitative properties of real analytic bounded maps. The main tool is approximation of real valued functions analytic in rectangular domains of the complex plane by continued g-fractions of Wall. As an application,…

Dynamical Systems · Mathematics 2018-08-21 Alexei Tsygvintsev

Differential equations are derived for a continuous limit of iterated Schwarzian reflection of analytic curves, and solutions are interpreted as geodesics in an infinite-dimensional symmetric space geometry.

Differential Geometry · Mathematics 2007-05-23 Annalisa Calini , Joel Langer

In this article we give a survey on open problems and conjectures concerning L^2-invariants. We cover the whole portfolio and not only certain aspects as they are considered in the previous more specialized (and within their scope more…

Algebraic Topology · Mathematics 2023-11-30 Dominik Kirstein , Christian Kremer , Wolfgang Lueck

In this survey we discuss the results on the finitistic dimension of various stratified algebras. We describe what is already known, present some recent estimates, and list some open problems.

Representation Theory · Mathematics 2010-04-02 Volodymyr Mazorchuk

In this paper, we present some generalizations of Lagrange's theorem in the classical theory of continued fractions motivated by the geometric interpretation of the classical theory in terms of closed geodesics on the modular curve. As a…

Number Theory · Mathematics 2017-12-25 Hohto Bekki

We discuss continued fractions on real quadratic number fields of class number 1. If the field has the property of being 2-stage euclidean, a generalization of the euclidean algorithm can be used to compute these continued fractions.…

Number Theory · Mathematics 2011-09-20 Xavier Guitart , Marc Masdeu

This paper is a review of recent and classical results on integrable geodesic flows on Riemannian manifolds and topological obstructions to integrability. We also discuss some open problems.

Mathematical Physics · Physics 2007-05-23 Alexey V. Bolsinov , Bozidar Jovanovic

This paper surveys some selected topics in the theory of conformal metrics and their connections to complex analysis, partial differential equations and conformal differential geometry.

Complex Variables · Mathematics 2008-05-16 Daniela Kraus , Oliver Roth

In this article we study solutions to second order linear difference equations with variable coefficients. Under mild conditions we provide closed form solutions using finite continued fraction representations. The proof of the results are…

Number Theory · Mathematics 2024-02-05 Shirali Kadyrov , Alibek Orynbassar

This paper is devoted to a systematic study of certain geometric integral inequalities which arise in continuum combinatorial approaches to $L^p$-improving inequalities for Radon-like transforms over polynomial submanifolds of intermediate…

Classical Analysis and ODEs · Mathematics 2022-03-23 Philip T Gressman

A selection of open problems in the theory of composites is presented. Particular attention is drawn to the question of whether two-dimensional, two-phase, composites with general geometries have the same set of possible effective tensors…

Analysis of PDEs · Mathematics 2021-06-09 Graeme W. Milton

We extend in this article the classical Sobolev inequalities for the module of continuity for the functions belonging to the integer order Sobolev's space on the Sobolev-Bilateral Grand Lebesgue spaces. As a consequence, we deduce the…

Functional Analysis · Mathematics 2013-01-03 E. Ostrovsky , L. Sirota

Infinite dimensional moment problems have a long history in diverse applied areas dealing with the analysis of complex systems but progress is hindered by the lack of a general understanding of the mathematical structure behind them.…

Functional Analysis · Mathematics 2017-10-02 Maria Infusino , Salma Kuhlmann

This paper presents an overview of the current state of knowledge in the field of equivariant map algebras and discusses some open problems in this area.

Representation Theory · Mathematics 2013-12-31 Erhard Neher , Alistair Savage

Problems in optimization and geometric probability are discussed, all connected with angles subtended at an observer's eye by an object at a distance. Several of these remain unsolved.

History and Overview · Mathematics 2018-12-11 Steven R. Finch