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Related papers: Quasiregular values and Rickman's Picard theorem

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We extend the notion of a pseudoholomorphic vector of Iwaniec, Verchota, and Vogel to mappings between Riemannian manifolds. Since this class of mappings contains both quasiregular mappings and (pseudo)holomorphic curves, we call them…

Complex Variables · Mathematics 2020-05-05 Pekka Pankka

We provide a new geometric proof of Reimann's theorem characterizing quasiconformal mappings as the ones preserving functions of bounded mean oscillation. While our proof is new already in the Euclidean spaces, it is applicable in…

Classical Analysis and ODEs · Mathematics 2016-03-16 Riikka Korte , Niko Marola , Olli Saari

We prove general a priori estimates of solutions of a class of quasilinear elliptic system on Carnot groups. As a consequence, we obtain several non existence theorems. The results are new even in the Euclidean setting.

Analysis of PDEs · Mathematics 2013-01-08 Lorenzo D'Ambrosio , Enzo Mitidieri

In this paper we develop a geometric theory for quasilinear parabolic problems in weighted $L_p$-spaces. We prove existence and uniqueness of solutions as well as the continuous dependence on the initial data. Moreover, we make use of a…

Analysis of PDEs · Mathematics 2015-10-22 Matthias Köhne , Jan Pruess , Mathias Wilke

In this paper we prove the multiplicity of solutions for a class of quasilinear problems in $ \mathbb{R}^{N} $ involving variable exponents. The main tool used is in the proof are the direct methods, Ekeland's variational principle and some…

Analysis of PDEs · Mathematics 2014-09-02 Claudianor O. Alves , José L. P. Barreiro

We show how to solve explicitly an equation satisfied by a real function belonging to certain general quasianalytic classes. Examples of the classes under consideration are the collection of convergent generalised power series, a class of…

Algebraic Geometry · Mathematics 2014-05-13 Tamara Servi

Generalising an example by Girondo and Wolfart, we use finite group theory to construct Riemann surfaces admitting two or more regular dessins (i.e. orientably regular hypermaps) with automorphism groups of the same order, and in many cases…

Combinatorics · Mathematics 2011-04-06 Gareth A. Jones

We prove that the composition of a quasi-nearly subharmonic function and a quasiregular mappings of bounded multiplicity is quasi-nearly subharmonic. Also, we prove that if $u\circ f$ is quasi-nearly subharmonic for all quasi-nearly…

Functional Analysis · Mathematics 2011-03-09 Pekka Koskela , Vesna Manojlović

We establish a rescaling theorem for isolated essential singularities of quasiregular mappings. As a consequence we show that the class of closed manifolds receiving a quasiregular mapping from a punctured unit ball with an essential…

Complex Variables · Mathematics 2015-05-20 Yûsuke Okuyama , Pekka Pankka

In this paper, we study the existence of solutions for generalized vector quasi-equilibrium problems. Firstly, we prove that in the case of Banach spaces, the assumptions of continuity over correspondences can be weakened. The theoretical…

Optimization and Control · Mathematics 2016-05-12 Monica Patriche

We extend Pisier's abstract version of Grothendieck's theorem to general non-locally convex quasi-Banach spaces. We also prove a related result on factoring operators through a Banach space and apply our results to the study of…

Functional Analysis · Mathematics 2008-02-03 Nigel J. Kalton , Sik-Chung Tam

We establish the H\"{o}lder estimate and the asymptotic behavior at infinity for $K$-quasiconformal mappings over exterior domains in $\mathbb{R}^2$. As a consequence, we prove an exterior Bernstein type theorem for fully nonlinear…

Analysis of PDEs · Mathematics 2023-01-12 Dongsheng Li , Rulin Liu

We consider the iteration of quasiregular maps of transcendental type from $\mathbb{R}^d$ to $\mathbb{R}^d$. We give a bound on the rate at which the iterates of such a map can escape to infinity in a periodic component of the quasi-Fatou…

Dynamical Systems · Mathematics 2018-02-02 Daniel A. Nicks , David J. Sixsmith

By using the theory of maximal $L^{q}$-regularity and methods of singular analysis, we show a Taylor's type expansion--with respect to the geodesic distance around an arbitrary point--for solutions of quasilinear parabolic equations on…

Analysis of PDEs · Mathematics 2021-06-09 Nikolaos Roidos

We establish a weighted version of the $H^p$-theory of quasiconformal mappings.

Complex Variables · Mathematics 2019-04-02 Sita Benedict , Pekka Koskela , Xining Li

We show a higher order integrability theorem for distributions generated by a family of vector fields under a horizontal regularity assumption on their coefficients. We use as chart a class of almost exponential maps which we discuss in…

Differential Geometry · Mathematics 2013-02-07 Daniele Morbidelli , Annamaria Montanari

A relative Picard theory in the context of graded manifolds is introduced. A Berezinian calculus and a theory of connections over SUSY-curves are systematically developed, and used to prove a Gauss-Bonnet theorem for line bundles in that…

High Energy Physics - Theory · Physics 2009-10-22 U. Bruzzo , J. A. Dominguez Perez

We prove new theorems which are higher-dimensional generalizations of the classical theorems of Siegel on integral points on affine curves and of Picard on holomorphic maps from $\mathbb{C}$ to affine curves. These include results on…

Number Theory · Mathematics 2007-05-23 Aaron Levin

We introduce a concept of a quasi proximate order which is a generalization of a proximate order and allows us to study efficiently analytic functions whose order and lower order of growth are different. We prove an existence theorem of a…

Complex Variables · Mathematics 2020-07-17 Igor Chyzhykov , Petro Filevych , Jouni Rättyä

Beardon and Minda gave a characterization of normal families of holomorphic and meromorphic functions in terms of a locally uniform Lipschitz condition. Here, we generalize this viewpoint to families of mappings in higher dimensions that…

Complex Variables · Mathematics 2022-01-25 Alastair N. Fletcher , Daniel A. Nicks