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In this paper we give simple extension and uniqueness theorems for restricted additive and logarithmic functional equations.

Analysis of PDEs · Mathematics 2023-06-22 Tamás Glavosits , Zsolt Karácsony

We present an extension theorem for a separately holomorphic function which is polynomial/rational in some variables.

Complex Variables · Mathematics 2025-02-18 Peter Pflug

In this note we provide explicit expressions and expansions for a special function which appears in nonparametric estimation of log-densities. This function returns the integral of a log-linear function on a simplex of arbitrary dimension.…

Computation · Statistics 2016-02-15 Madeleine L. Cule , Lutz Duembgen

We establish rigidity results for holomorphic mappings and plurisubharmonic functions in complex geometry. First, under mild conditions, we show that the gradient of a $\operatorname{U}(1)$-invariant strictly plurisubharmonic function in…

Complex Variables · Mathematics 2026-04-30 Hanwen Liu

We give a method of solution to the problem of iterating holomorphic functions to fractional or complex heights. We construct an auxiliary function from natural iterates of a holomorphic function; the auxiliary function will be…

Complex Variables · Mathematics 2016-02-08 James Nixon

For a smooth strictly pseudoconvex hypersurface in a complex manifold, we give a necessary and sufficient condition for being CR-diffeomorphic to a real-analytic CR manifold. Our condition amounts to a holomorphic extension property for the…

Complex Variables · Mathematics 2019-06-25 Ilya Kossovskiy , Dmitri Zaitsev

In this paper we examinate some phenomena arising when a holomorphic germ is analytically continued.

Complex Variables · Mathematics 2009-02-26 Claudio Meneghini

This paper deals with extension of analytic covers. We prove topological extension theorems for analytic covers. The main result is an extension theorem which only uses the extension of the ramification divisor. We give also a Thullen-type…

Complex Variables · Mathematics 2016-04-28 Landry Lavoine

We show that for every connected analytic subvariety $V$ there is a pseudoconvex set $\Omega$ such that every bounded matrix-valued holomorphic function on $V$ extends isometrically to $\Omega$. We prove that if $V$ is two analytic disks…

Complex Variables · Mathematics 2022-04-20 Jim Agler , Lukasz Kosinski , John E. McCarthy

In this paper, we consider time-varying real analytic vector fields as curves on the space of real analytic vector fields. Using a suitable topology on the space of real analytic vector fields, we study and characterize different properties…

Functional Analysis · Mathematics 2016-04-11 Saber Jafarpour

Using the theory of functions of several complex variables, we prove that if an analytic function in several variables satisfies a system of $q$-partial differential equations, then, it can be expanded in terms of the product of the…

Analysis of PDEs · Mathematics 2018-05-08 Zhi-Guo Liu

In a previous paper \cite{ref1} we produced a sequence of analytic functions $\{\alpha \uparrow^n z\}_{n=0}^\infty$ when $1 \le \alpha \le e^{1/e}$ and $z$ was in the right half of the complex plane, the \emph{bounded analytic…

Complex Variables · Mathematics 2016-04-07 James D. Nixon

Using the notion of order convergent nets, we develop an order-theoretic approach to differentiable functions on Archimedean complex $\Phi$-algebras. Most notably, we improve the Cauchy-Hadamard formulas for universally complete complex…

Functional Analysis · Mathematics 2022-11-28 Mark Roelands , Christopher Michael Schwanke

We study the holomorphic extendability of smooth CR maps between real analytic strictly pseudoconvex hypersurfaces in complex affine spaces of different dimensions.

Complex Variables · Mathematics 2007-05-23 Sergey Pinchuk , Alexandre Sukhov

Generalized analytic functions over generalized analytic manifolds are build from sums of convergent real power series with non-negative real exponents (and some well-ordering condition on the support). In a paper by Mart\'in-Villaverde,…

Algebraic Geometry · Mathematics 2022-06-23 B. Molina-Samper , J. Palma-Márquez , F. Sanz-Sánchez

Let X be a Riemannian symmetric space of non-compact type. We prove a theorem of holomorphic extension for eigenfunctions of the Laplace-Beltrami operator on X, by techniques from the theory of partial differential equations.

Representation Theory · Mathematics 2009-10-21 Bernhard Kroetz , Henrik Schlichtkrull

In this paper we introduce techniques from complex harmonic analysis to prove a weaker version of the Geometric Arveson-Douglas Conjecture for complex analytic subsets that is smooth on the boundary of the unit ball and intersects…

Functional Analysis · Mathematics 2016-01-29 Ronald G. Douglas , Yi Wang

Let $G$ be a complex connected reductive algebraic group and let $G_{\mathbb{R}}$ be a real form of $G$. We construct a sequence of functors $L_i\mathcal{R}$ from admissible (resp. finite-length) representations of $G$ to admissible (resp.…

Representation Theory · Mathematics 2022-04-25 Lucas Mason-Brown

For a function defined on an arbitrary subset of a Riemann surface, we give conditions which allow the function to be extended conformally. One folkloric consequence is that two common definitions of an analytic arc in ${\mathbb C}$ are…

Complex Variables · Mathematics 2014-06-16 P. M. Gauthier , V. Nestoridis

We proved the so called complex bounds for multimodal, infinitely renormalizable analytic maps with bounded combinatorics: deep renormalizations have polynomial-like extensions with definite modulus. The complex bounds is the first step to…

Dynamical Systems · Mathematics 2022-03-30 Daniel Smania