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Related papers: On the uniqueness sets in the Fock space

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We describe quantization schemes for scalar field cosmology in the metric variables with fundamental discreteness imposed with a lattice. The variables chosen for quantization determine the lattice, and each lattice produces distinct…

General Relativity and Quantum Cosmology · Physics 2025-07-18 Mustafa Saeed , Viqar Husain

This article is dedicated to geometric structure of the Lorentz and Marcinkiewicz spaces in case of the pure atomic measure. We study complete criteria for order continuity, the Fatou property, strict monotonicity and strict convexity in…

Functional Analysis · Mathematics 2018-05-17 Maciej Ciesielski , Grzegorz Lewicki

This is the first part of our work which is devoted to the uniqueness sets for spaces of entire functions. In this part we consider a set $\Lambda$ with angular density with respect to the order $\rho>0,$ satisfying the Lindel\"of…

Complex Variables · Mathematics 2026-02-17 Anna Kononova

We characterize those complete commutative positive linear ordered monoids $W$ such that whenever $f$ is a map from a Cauchy complete $W$-metric space to itself, the existence of a fixed point of $f$ is independent of the background model…

General Topology · Mathematics 2025-04-15 Nathanael Ackerman , Mostafa Mirabi

A 1910 theorem of Brouwer characterizes the Cantor set as the unique totally disconnected, compact metric space without isolated points. A 1920 theorem of Sierpinski characterizes the rationals as the unique countable metric space without…

General Topology · Mathematics 2012-10-04 Michael Francis

This note will present a new proof of the fact that every uniformly bounded group of invertible elements in a finite von Neumann algebra is similar to a unitary group. The proof involves metric geometric arguments in the non-positively…

Operator Algebras · Mathematics 2017-05-04 Martin Miglioli

This article presents the lattice-smeared gravity phase space reduction defined by the cosmological gauge-fixing conditions. These conditions are specified to reduce the SU(2) symmetry and the spatial diffeomorphism invariance of the loop…

General Relativity and Quantum Cosmology · Physics 2021-05-28 Jakub Bilski

In this work, major principles of the mathematical constitution of space and the principles of construction of the physical space are presented. Generalized conceptions of distances and dimensionality evaluation are proposed, together with…

General Physics · Physics 2007-05-23 Michel Bounias , Volodymyr Krasnoholovets

In this paper we construct an "abstract Fock space" for general Lie types that serves as a generalisation of the infinite wedge $q$-Fock space familiar in type $A$. Specifically, for each positive integer $\ell$, we define a…

Representation Theory · Mathematics 2019-12-19 Arun Ram , Martina Lanini , Paul Sobaje

We analyse the issue of uniqueness of solutions of the static vacuum Einstein equations with prescribed geometric or Bartnik boundary data. Large classes of examples are constructed where uniqueness fails. We then discuss the implications…

General Relativity and Quantum Cosmology · Physics 2011-03-08 Michael T. Anderson , Marcus A. Khuri

The factorizable vectors of a complete Boolean algebra of type I factors, acting on a separable Hilbert space, are shown to be total, resolving a conjecture of Araki and Woods. En route, the spectral theory of noise-type Boolean algebras of…

Operator Algebras · Mathematics 2024-08-06 Matija Vidmar

The spectrum of the d-bar-Neumann Laplacian on the Fock space $L^2(\mathbb{C}^n, e^{-|z|^2})$ is explicitly computed. It turns out that it consists of positive integer eigenvalues each of which is of infinite multiplicity. Spectral analysis…

Complex Variables · Mathematics 2013-02-07 Friedrich Haslinger

Uniqueness problems in the elliptic sector of constrained formulations of Einstein equations have a dramatic effect on the physical validity of some numerical solutions, for instance when calculating the spacetime of very compact stars or…

General Relativity and Quantum Cosmology · Physics 2009-02-26 Isabel Cordero-Carrión , Pablo Cerdá-Durán , Harald Dimmelmeier , José Luis Jaramillo , Jérôme Novak , Eric Gourgoulhon

Let $\Gamma$ be a discrete group. Following Linnell and Schick one can define a continuous ring $c(\Gamma)$ associated with $\Gamma$. They proved that if the Atiyah Conjecture holds for a torsion-free group $\Gamma$, then $c(\Gamma)$ is a…

Rings and Algebras · Mathematics 2014-02-25 Gabor Elek

Zeckendorf's Theorem states that any positive integer can be written uniquely as a sum of non-adjacent Fibonacci numbers. We consider higher-dimensional lattice analogues, where a legal decomposition of a number $n$ is a collection of…

Number Theory · Mathematics 2018-09-18 Eric Chen , Robin Chen , Lucy Guo , Cindy Jiang , Steven J. Miller , Joshua M. Siktar , Peter Yu

For $n\ge5$, it is well known that the moduli space $\mathfrak{M_{0,\:n}}$ of unordered $n$ points on the Riemann sphere is a quotient space of the Zariski open set $K_n$ of $\mathbb C^{n-3}$ by an $S_n$ action. The stabilizers of this…

Algebraic Geometry · Mathematics 2019-02-12 Yue Wu , Bin Xu

We consider the unique continuation properties of asymptotically Anti-de Sitter spacetimes by studying Klein-Gordon-type equations $\Box_g \phi + \sigma \phi = \mathcal{G} ( \phi, \partial \phi )$, $\sigma \in \mathbb{R}$, on a large class…

General Relativity and Quantum Cosmology · Physics 2016-09-14 Gustav Holzegel , Arick Shao

We study the uniqueness sets, the weak interpolation sets, and convergence of the Lagrange interpolation series in radial weighted Fock spaces

Classical Analysis and ODEs · Mathematics 2012-02-21 André Dumont , Karim Kellay

A general theorem due to Howe of dual action of a classical group and a certain non-associative algebra on a space of symmetric or alternating tensors is reformulated in a setting of second quantization, and familiar examples in atomic and…

Mathematical Physics · Physics 2020-12-29 K. Neergård

We prove an existence and uniqueness theorem for fixed points of contraction maps in the framework of quantum metric spaces, where distinguishability is defined by the $L^2$ norm: $d_Q(\psi_1,\psi_2) = \|\psi_1 - \psi_2\|$. The result…

Quantum Physics · Physics 2025-12-04 Nicola Fabiano
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