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We show that, for disjoint domains in the Euclidean space, mutual absolute continuity of their harmonic measures implies absolute continuity with respect to surface measure and rectifiability in the intersection of their boundaries. This…

Classical Analysis and ODEs · Mathematics 2016-09-21 Jonas Azzam , Mihalis Mourgoglou , Xavier Tolsa , Alexander Volberg

We propose an uncertainty-complementarity balance relation and build quantitative connections among non-locality, complementarity, and uncertainty. Our balance relation, which is formulated in a theory-independent manner, states that for…

Quantum Physics · Physics 2018-08-21 Liang-Liang Sun , Sixia Yu , Zeng-Bing Chen

It was recently shown that the harmonic measure is absolutely continuous with respect to the Hausdorff measure on a domain with an $n-1$ dimensional uniformly rectifiable boundary, in the presence of now well understood additional…

Analysis of PDEs · Mathematics 2020-06-29 G. David , S. Mayboroda

We consider pairs of 3-dimensional Brownian paths, started at the origin and conditioned to have no intersections after time zero. We show that there exists a unique measure on pairs of paths that is invariant under this conditioning, while…

Probability · Mathematics 2012-12-03 Gregory F. Lawler , Brigitta Vermesi

A theorem of David and Jerison asserts that harmonic measure is absolutely continuous with respect to surface measure in NTA domains with Ahlfors regular boundaries. We prove that this fails in high dimensions if we relax the Ahlfors…

Classical Analysis and ODEs · Mathematics 2016-06-03 Jonas Azzam , Mihalis Mourgoglou , Xavier Tolsa

We show that, for disjoint domains in the Euclidean space whose boundaries satisfy a non-degeneracy condition, mutual absolute continuity of their harmonic measures implies absolute continuity with respect to surface measure and…

Classical Analysis and ODEs · Mathematics 2016-06-01 Jonas Azzam , Mihalis Mourgoglou , Xavier Tolsa

This paper investigates the properties of trajectories in harmonic oscillator systems equipped with a point, absolutely continuous, or singular measure. As demonstrated in [30], infinite-dimensional linear flows of countable oscillator…

Dynamical Systems · Mathematics 2025-08-15 Vsevolod Sakbaev , Igor Volovich

The present paper establishes that the Robin harmonic measure is quantitatively mutually absolutely continuous with respect to the surface measure on any Ahlfors regular set in any (quantifiably) connected domain for any elliptic operator.…

Analysis of PDEs · Mathematics 2024-11-01 Guy David , Stefano Decio , Max Engelstein , Svitlana Mayboroda , Marco Michetti

Tverberg's theorem is one of the cornerstones of discrete geometry. It states that, given a set $X$ of at least $(d+1)(r-1)+1$ points in $\mathbb R^d$, one can find a partition $X=X_1\cup \ldots \cup X_r$ of $X$, such that the convex hulls…

Computational Geometry · Computer Science 2021-04-13 Radoslav Fulek , Bernd Gärtner , Andrey Kupavskii , Pavel Valtr , Uli Wagner

In this work, we prove the existence of solutions for a tripled system of integral equations using some new results of fixed point theory associated with measure of noncompactness. These results extend some previous works in the literature,…

Functional Analysis · Mathematics 2020-02-04 Vatan Karakaya , Mohammad Mursaleen , Nour El Houda Bouzara , Derya Sekman

We proved two Three Circles Theorems for harmonic functions on manifolds in integral sense. As one application, on manifold with nonnegative Ricci curvature, whose tangent cone at infinity is the unique metric cone with unique conic…

Differential Geometry · Mathematics 2016-12-21 Guoyi Xu

We show that for uniform domains $\Omega\subseteq \mathbb{R}^{d+1}$ whose boundaries satisfy a certain nondegeneracy condition that harmonic measure cannot be mutually absolutely continuous with respect to $\alpha$-dimensional Hausdorff…

Classical Analysis and ODEs · Mathematics 2016-06-03 Jonas Azzam , Mihalis Mourgoglou

The trichotomy between regular, semiregular, and strongly irregular boundary points for $p$-harmonic functions is obtained for unbounded open sets in complete metric spaces with a doubling measure supporting a $p$-Poincar\'e inequality,…

Analysis of PDEs · Mathematics 2022-07-15 Anders Björn , Daniel Hansevi

We study absolute continuity of harmonic measure with respect to surface measure on domains $\Omega$ that have large complements. We show that if $\Gamma\subset \mathbb{R}^{d+1}$ is $d$-Ahlfors regular and splits $ \mathbb{R}^{d+1}$ into…

Classical Analysis and ODEs · Mathematics 2016-08-29 Murat Akman , Jonas Azzam , Mihalis Mourgoglou

We prove a structure theorem for any $n$-rectifiable set $E\subset \mathbb{R}^{n+1}$, $n\ge 1$, satisfying a weak version of the lower ADR condition, and having locally finite $H^n$ ($n$-dimensional Hausdorff) measure. Namely, that…

Classical Analysis and ODEs · Mathematics 2019-07-25 Murat Akman , Simon Bortz , Steve Hofmann , José Maria Martell

Tsirelson's precession protocol is a nonclassicality witness that can be defined for both discrete and continuous variable systems. Its original version involves measuring a precessing observable, like the quadrature of a harmonic…

Quantum Physics · Physics 2025-09-30 Lin Htoo Zaw , Valerio Scarani

The time evolution of the continuous measure symmetry for the system built of the three bodies interacting via the potential U(r)~1/r is reported. Gravitational and electrostatic interactions between the point bodies were addressed. In the…

General Physics · Physics 2023-09-08 Mark Frenkel , Shraga Shoval , Edward Bormashenko

How to understand the set of correlations admissible in nature is one outstanding open problem in the core of the foundations of quantum theory. Here we take a complementary viewpoint to the device-independent approach, and explore the…

Quantum Physics · Physics 2023-08-16 John H. Selby , Ana Belén Sainz , Victor Magron , Łukasz Czekaj , Michał Horodecki

We prove a Central Limit Theorem for the Critical Points of Random Spherical Harmonics, in the High-Energy Limit. The result is a consequence of a deeper characterizations of the total number of critical points, which are shown to be…

Probability · Mathematics 2020-05-12 Valentina Cammarota , Domenico Marinucci

Let $f$ be a holomorphic function on the unit disc, and $(S_{n_{k}})$ be a subsequence of its Taylor polynomials about $0$. It is shown that the nontangential limit of $f$ and lim$_{k\rightarrow \infty }S_{n_{k}}$ agree at almost all points…

Complex Variables · Mathematics 2014-12-10 Stephen J. Gardiner , Myrto Manolaki
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