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A subset of a topological space is constructible if it is a finite Boolean combination of closed sets. We prove that every NTP$_2$ expansion of $(\mathbb{R},<,+)$ by constructible sets defines only constructible sets, and that definable…

逻辑 · 数学 2026-05-20 Pablo Andújar Guerrero

For any smooth projective variety with holomorphic locally homogeneous structure modelled on a homogeneous algebraic variety, we determine all the subvarieties of it which develop to the model.

代数几何 · 数学 2024-04-09 Indranil Biswas , Benjamin McKay

In this paper, we present a general theory of finite quantum measurements, for which we assume that the state space of the measured system is a finite dimensional Hilbert space and that the possible outcomes of a measurement is a finite set…

量子物理 · 物理学 2023-02-15 Masanao Ozawa

One can easily show that any meromorphic function on a complex closed Riemann surface can be represented as a composition of a birational map of this surface to CP^2 and a projection of the image curve from an appropriate point p in CP^2 to…

代数几何 · 数学 2014-08-29 J. Ongaro , B. Shapiro

The pure state space of Quantum Mechanics is investigated as Hermitian Symmetric Kaehler manifold. The classical principles of Quantum Mechanics (Quantum Superposition Principle, Heisenberg Uncertainty Principle, Quantum Probability…

量子物理 · 物理学 2009-11-07 R. Cirelli , M. Gatti , A. Maniá

We compare three notions of genericity of separable metric structures. Our analysis provides a general model theoretic technique of showing that structures are generic in descriptive set theoretic (topological) sense and in measure…

逻辑 · 数学 2008-02-04 Alexander Usvyatsov

In the Hamiltonian approach on a single spatial plaquette, we construct a quantum (lattice) gauge theory which incorporates the classical singularities. The reduced phase space is a stratified K\"ahler space, and we make explicit the…

高能物理 - 理论 · 物理学 2009-01-30 J. Huebschmann , G. Rudolph , M. Schmidt

We consider definable topological spaces of dimension one in o-minimal structures, and state several equivalent conditions for when such a topological space $\left(X,\tau\right)$ is definably homeomorphic to an affine definable space…

逻辑 · 数学 2019-04-30 Ya'acov Peterzil , Ayala Rosel

We consider the quantization of space-times which can possess different topologies within a symmetry reduced version of Wheeler-DeWitt theory. The quantum states are defined from a natural decomposition as an outer-product of a topological…

广义相对论与量子宇宙学 · 物理学 2014-04-17 Johan Brannlund , Andrew DeBenedictis , Alison Lauman

In this paper we investigate the properties of the real and complex projective structures associated to Hitchin and quasi-Hitchin representations that were originally constructed using Guichard-Wienhard's theory of domains of discontinuity.…

几何拓扑 · 数学 2021-11-01 Daniele Alessandrini , Colin Davalo , Qiongling Li

Hyperspaces form a powerful tool in some branches of mathematics: lots of fractal and other geometric objects can be viewed as fixed points of some functions in suitable hyperspaces - as well as interesting classes of formal languages in…

一般拓扑 · 数学 2014-10-15 René Bartsch

Recently many papers on cone metric spaces have been appeared, and main topological properties of such spaces have been obtained. A cone metric space is Hausdorff, and first countable, so the topology of it coincides with a topology induced…

一般拓扑 · 数学 2012-07-25 AyŞE SÖnmez

We detect Hilbert manifolds among isometrically homogeneous metric spaces and apply the obtained results to recognizing Hilbert manifolds among homogeneous spaces of the form G/H where G is a metrizable topological group and H is a closed…

几何拓扑 · 数学 2011-08-23 Taras Banakh , Dusan Repovs

Metric spaces are a fundamental component of mathematics and have a paramount importance as a framework for measuring distance. They can be found in many different branches of mathematics, such as analysis and topology. This paper offers an…

一般拓扑 · 数学 2025-10-30 Ismail Gemaledin , Iusuf Gemaledin

The concept of a superposition is a revolutionary novelty introduced by Quantum Mechanics. If a system may be in any one of two pure states x and y, we must consider that it may also be in any one of many superpositions of x and y. An…

量子物理 · 物理学 2008-04-07 Daniel Lehmann

We compute and analyse the moduli space of those real projective structures on a hyperbolic 3-orbifold that are modelled on a single ideal tetrahedron in projective space. Parameterisations are given in terms of classical invariants,…

几何拓扑 · 数学 2021-01-06 Joan Porti , Stephan Tillmann

Projective structures on topological surfaces support the structure of 2d CFTs with a degree of technical simplification. We propose a complex analytic space $\mathcal{P}_g$ biholomorphic to $T^*_{(1,0)} \mathcal{M}_g$ as a candidate moduli…

高能物理 - 理论 · 物理学 2024-11-05 Xiao Liu

A set of reproducing kernel Hilbert spaces are obtained on Hilbert spaces over quaternion slices with the aid of coherent states. It is proved that the so obtained set forms a measurable field of Hilbert spaces and their direct integral…

数学物理 · 物理学 2016-09-30 K. Thirulogasanthar , B. Muraleetharan

We survey indications from different branches of Physics that the fine scale structure of spacetime is not adequately described by a manifold. Based on the hints we accumulate, we propose a new structure, which we call a quantum topos. In…

广义相对论与量子宇宙学 · 物理学 2007-07-02 Louis Crane

Let $M$ be any $n$ dimensional smooth manifold and $PM$ be the space of all smooth paths, then we showed that $PM$ is a smooth manifold modelled over a complete normable space. We discussed many geometric structure on Path spaces and its…

微分几何 · 数学 2011-08-11 Pradip Kumar