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Within the framework of balayage spaces (the analytical equivalent of nice Hunt processes), we prove equicontinuity of bounded families of harmonic functions and apply it to obtain criteria for compactness of potential kernels.

Analysis of PDEs · Mathematics 2019-05-01 Wolfhard Hansen

We consider the eigenvalue problem and the associated intersection theory of homogenous spaces for the symplectic and odd orthogonal groups. We solve the Horn and saturation problems for these classical groups.

Representation Theory · Mathematics 2007-08-03 Prakash Belkale , Shrawan Kumar

We consider weighted harmonic Bergman spaces on upper half-space with weights depending only on the vertical coordinate. In these settings, we give full asymptotic expansion of weighted harmonic Bergman kernel as well as full asymptotic…

Complex Variables · Mathematics 2023-12-15 Jaroslav Bradík

We consider holomorphic functions on the unit disc whose images are contained in a strip of the complex plane. Under an additional condition, such functions are constants. We also consider appropriate operator valued versions. Applications…

Functional Analysis · Mathematics 2024-06-12 Tirthankar Bhattacharyya , Anthony G. O'Farrell , Shubham Rastogi , Vijaya Kumar U

The connection between spherical harmonics and symmetric tensors is explored. For each spherical harmonic, a corresponding traceless symmetric tensor is constructed. These tensors are then extended to include nonzero traces, providing an…

Classical Physics · Physics 2020-10-20 Francisco Gonzalez Ledesma , Matthew Mewes

We generalize Rado's extension theorem to complex spaces.

Complex Variables · Mathematics 2021-01-12 V. Vijiitu

An abstract theory of ultradifferentiable sheafs is developed. Moreover, various applications to the theory of linear partial differential equations, differential geometry and, in particular, CR geometry are discussed.

Analysis of PDEs · Mathematics 2026-03-13 Stefan Fürdös

We present a comprehensive survey on removability of compact plane sets with respect to various classes of holomorphic functions. We also discuss some applications and several open questions, some of which are new.

Complex Variables · Mathematics 2015-12-17 Malik Younsi

We study the global analytic properties of a space $X$ with a horn type singularity. In particular, we introduce some de Rham complex of square integrable forms and we describe its homology and the spectral properties of the associated…

Functional Analysis · Mathematics 2023-05-10 Mauro Spreafico

A piecewise continuous biharmonic problem in domains with corner points and a corresponding Schwarz type boundary value problem for monogenic functions in a commutative biharmonic algebra are considered. A method for reducing the problems…

Complex Variables · Mathematics 2025-04-25 S. V. Gryshchuk , S. A. Plaksa

We present a semiclassical model for plasmon-enhanced high-harmonic generation (HHG) in the vicinity of metal nanostructures. We show that both the inhomogeneity of the enhanced local fields and electron absorption by the metal surface play…

Optics · Physics 2015-07-29 A. Husakou , S. -J. Im , J. Herrmann

Recent progress in analytical calculation of the multiple [inverse, binomial, harmonic] sums, related with epsilon-expansion of the hypergeometric function of one variable are discussed.

High Energy Physics - Theory · Physics 2007-05-23 M. Yu. Kalmykov

It is well known that the real and imaginary parts of any holomorphic function are harmonic functions of two variables. In this paper we generalize this property to finite-dimensional commutative algebras. We prove that if some basis of a…

Analysis of PDEs · Mathematics 2008-11-18 Anatoliy A. Pogorui

In this paper we extend the Poletsky-Rosay theorem, concerning plurisubharmonicity of the Poisson envelope of an upper semicontinuous function, to locally irreducible complex spaces.

Complex Variables · Mathematics 2013-08-06 Barbara Drinovec Drnovsek , Franc Forstneric

Non-polynomial growth harmonic maps from the complex plane to the hyperbolic space are studied. Some non-surjectivity results are obtained. Moreover, images of such harmonic maps are investigated with reference to their Hopf differentials.

Differential Geometry · Mathematics 2007-05-23 Thomas Kwok-keung Au , Luen-fai Tam , Tom Yau-heng Wan

Differential completions and compactifications of differential spaces are introduced and investigated. The existence of the maximal differential completion and the maximal differential compactification is proved. A sufficient condition for…

Differential Geometry · Mathematics 2011-03-30 Diana Dziewa-Dawidczyk , Zbigniew Pasternak-Winiarski

In this paper, we introduce the notion of a multiplicative unimodularity for a coisotropic Poisson homogeneous space. Then, we discuss the unimodularity and the multiplicative unimodularity for these spaces and the existence of an invariant…

Differential Geometry · Mathematics 2024-11-19 Ivan Gutierrez-Sagredo , David Iglesias Ponte , Juan Carlos Marrero , Edith Padrón

We discuss a general result of holomorphic extension of a real analytic function $f$ defined on the boundary $\partial D$ of a real analytic strictly convex subset $D\subset\subset \C^n$. We show that this follows from the hypothesis of…

Complex Variables · Mathematics 2009-11-10 L. Baracco

We construct a family of coherent states transforms attached to generalized Bargmann spaces [C.R. Acad.Sci.Paris, t.325,1997] in the complex plane. This constitutes another way of obtaining the kernel of an isometric operator linking the…

Mathematical Physics · Physics 2010-03-30 Zouhair Mouayn

We propose a method to extend submanifolds, singular Riemannian foliations and isometric actions from a boundary component of a noncompact symmetric space to the whole space. This extension method preserves minimal submanifolds,…

Differential Geometry · Mathematics 2014-11-07 Miguel Dominguez-Vazquez