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We consider the inverse problem of recovering the magnetic and potential term of a magnetic Schr\"{o}dinger operator on certain compact Riemannian manifolds with boundary from partial Dirichlet and Neumann data on suitable subsets of the…

Analysis of PDEs · Mathematics 2018-10-10 Sombuddha Bhattacharyya

We investigate the subclass of reversible functions that are self-inverse and relate them to reversible circuits that are equal to their reverse circuit, which are called palindromic circuits. We precisely determine which self-inverse…

Emerging Technologies · Computer Science 2015-02-23 Mathias Soeken , Michael Kirkedal Thomsen , Gerhard W. Dueck , D. Michael Miller

We construct embeddings of Bers slices of ideal polygon reflection groups into the classical family of univalent functions $\Sigma$. This embedding is such that the conformal mating of the reflection group with the anti-holomorphic…

Complex Variables · Mathematics 2022-02-18 Kirill Lazebnik , Nikolai G. Makarov , Sabyasachi Mukherjee

The purpose of this note is to discuss the real analogue of the Schwarz lemma from complex analysis.

History and Overview · Mathematics 2010-12-06 Steven J. Miller , David A. Thompson

We consider the inverse conductivity problem with one measurement for the equation $div((\sigma\_1+(\sigma\_2-\sigma\_1)\chi\_D)\nabla{u})=0$ determining the unknown inclusion $D$ included in $\Omega$. We suppose that $\Omega$ is the unit…

Optimization and Control · Mathematics 2007-05-23 Marc Dambrine , Djalil Kateb

This paper studies the determining sets for analytic functions from the symmetrized bidisk into the open unit disk in $\mathbb C$. It relates the idea to the uniqueness of the solutions of a Nevanlinna-Pick interpolation problem. It also…

Complex Variables · Mathematics 2022-08-15 B. Krishna Das , P. Kumar , H. Sau

Let $K$ be an {\em arbitrary} field of characteristic $p>0$, let $A$ be one of the following algebras: $P_n:= K[x_1, ..., x_n]$ is a polynomial algebra, $\CD (P_n)$ is the ring of differential operators on $P_n$, $\CD (P_n)\t P_m$, the…

Rings and Algebras · Mathematics 2007-05-23 V. V. Bavula

In this paper, we first obtain an estimate of the coefficients for $\alpha$-harmonic mappings. By applying these coefficient estimates, we prove the Landau type theorem for $\alpha$-harmonic mappings defined on the unit disc $\ID$.

Complex Variables · Mathematics 2024-06-07 Vasudevarao Allu , Rohit Kumar

In this paper, we shall discuss the family of biharmonic mappings for which maximum principle holds. As a consequence of our study, we present Schwarz Lemma for the family of biharmonic mappings. Also we discuss the univalency of certain…

Complex Variables · Mathematics 2017-09-27 Zayid Abdulhadi , Yusuf Abu Muhanna , Saminathan Ponnusamy

Maps between Riemannian manifolds which are submersions on a dense subset, are studied by means of the eigenvalues of the pull-back of the target metrics, the first fundamental form. Expressions for the derivatives of these eigenvalues…

Differential Geometry · Mathematics 2008-09-11 E. Loubeau , R. Slobodeanu

In this article, we establish a connection between Pick bodies and invariant functions. We demonstrate that an invariant function can be associated with any Pick body, which determines the solvability of a given Pick interpolation problem…

Complex Variables · Mathematics 2025-02-17 Anindya Biswas

In this article, we give an explicit description of the invertible functions on the Drinfeld symmetric space over $K$ a finite extension of $\mathbb{Q}_p$. We identify them with some distribution spaces over the profinite set of…

Number Theory · Mathematics 2022-04-21 Damien Junger

Some improvements of the celebrated Schwarz inequality in complex inner product spaces are given. Applications for n-tuples of complex numbers are provided.

Functional Analysis · Mathematics 2017-09-08 Silvestru Sever Dragomir

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

We establish a sequential Hopf's Lemma for higher order differential inequalities in one variable and give some applications of this result.

Classical Analysis and ODEs · Mathematics 2012-09-27 Yifei Pan , Mei Wang , Yu Yan

We study the reverse triangle inequalities for suprema of logarithmic potentials on compact sets of the plane. This research is motivated by the inequalities for products of supremum norms of polynomials. We find sharp additive constants in…

Complex Variables · Mathematics 2013-07-23 I. E. Pritsker , E. B. Saff

This paper is devoted to the investigation of multidimensional analogues of refined Bohr-type inequalities for bounded holomorphic mappings on the unit polydisc $\mathbb{P}\Delta(0;1_n)$. We provide a definitive resolution to the Bohr…

Complex Variables · Mathematics 2026-03-05 Molla Basir Ahamed , Sujoy Majumder , Debabrata Pramanik

In this paper we prove a Schwarz lemma for harmonic mappings between the unit balls in real Euclidean spaces. Roughly speaking, our result says that under a harmonic mapping between the unit balls in real Euclidean spaces, the image of a…

Complex Variables · Mathematics 2013-04-10 Shaoyu Dai , Yifei Pan

The more then hundred years old Bernstein inequality states that the supremum norm of the derivative of a trigonometric polynomial of fixed degree can be bounded from above by supremum norm of the polynomial itself. The reversed Bernstein…

Classical Analysis and ODEs · Mathematics 2023-03-09 Parvaneh Joharinad , Jürgen Jost , Sunhyuk Lim , Rostislav Matveev

In this paper we investigate Toeplitz and symmetric Toeplitz determinants of inverse functions for some classes of univalent functions and improve some previous results.

Complex Variables · Mathematics 2025-12-25 Milutin Obradović , Nikola Tuneski