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In this paper we show that the Chern numbers of a smooth Mori fibre space in dimension three are bounded in terms of the underlying topological manifold. We also generalise a theorem of Cascini and the second named author on the boundedness…

Algebraic Geometry · Mathematics 2019-06-05 Stefan Schreieder , Luca Tasin

A previous research on multivariate approach to the calculation of reverberation chamber correlation matrices is used to calculate the number of independent positions in a mode-stirred reverberation chamber. Anomalies and counterintuitive…

Chaotic Dynamics · Physics 2014-07-08 Gabriele Gradoni , Franco Moglie , Valter Mariani Primiani

The `local scaling' hypothesis, first introduced by Nieuwstadt two decades ago, describes the turbulence structure of stable boundary layers in a very succinct way and is an integral part of numerous local closure-based numerical weather…

Atmospheric and Oceanic Physics · Physics 2016-08-16 Sukanta Basu , Fernando Porté-Agel , Efi Foufoula-Georgiou , Jean-François Vinuesa , Markus Pahlow

We study the line ensembles of non-crossing Brownian bridges above a hard wall, each tilted by the area of the region below it with geometrically growing pre-factors. This model, which mimics the level lines of the $(2+1)$D SOS model above…

Probability · Mathematics 2022-05-11 Amir Dembo , Eyal Lubetzky , Ofer Zeitouni

We study a model of nonintersecting Brownian bridges on an interval with either absorbing or reflecting walls at the boundaries, focusing on the point in space-time at which the particles meet the wall. These processes are determinantal,…

Probability · Mathematics 2016-09-01 Karl Liechty , Dong Wang

In a previous paper, the first two named authors established an isomorphism between the moduli space of framed flags of sheaves on the projective plane and the moduli space of stable representations of a certain quiver. In the present note,…

Algebraic Geometry · Mathematics 2021-05-19 Rodrigo A. Von Flach , Marcos Jardim , Valeriano Lanza

The real Chern insulator state, featuring nontrivial real Chern number and second-order boundary modes, has been revealed in a few two-dimensional systems. The concept can be extended to three dimensions (3D), but a proper material…

Materials Science · Physics 2023-02-28 Xu-Tao Zeng , Bin-Bin Liu , Fan Yang , Zeying Zhang , Y. X. Zhao , Xian-Lei Sheng , Shengyuan A. Yang

In this paper, we characterize Riemannian 4-manifold in terms of its almost Hermitian twistor spaces $(Z,g_t,\mathbb{J}_{\pm})$. Some special metric conditions (including Balanced metric condition, first Gauduchon metric condition) on…

Differential Geometry · Mathematics 2014-03-13 Jixiang Fu , Xianchao Zhou

A general method is proposed for predicting the asymptotic percolation threshold of networks with bottlenecks, in the limit that the sub-net mesh size goes to zero. The validity of this method is tested for bond percolation on filled…

Statistical Mechanics · Physics 2009-11-13 Amir Haji-Akbari , Robert M. Ziff

Models of discrete space and space-time that exhibit continuum-like behavior at large lengths could have profound implications for physics. They may tame the infinities that arise from quantizing gravity, and dispense with the machinery of…

Statistical Mechanics · Physics 2021-10-29 Robert Stanley Farr , Thomas M. A. Fink

The random-cluster model, a correlated bond percolation model, unifies a range of important models of statistical mechanics in one description, including independent bond percolation, the Potts model and uniform spanning trees. By…

Statistical Mechanics · Physics 2016-01-28 Eren Metin Elçi , Martin Weigel , Nikolaos G. Fytas

At sufficiently high Reynolds numbers, shear-flow turbulence close to a wall acquires universal properties. When length and velocity are rescaled by appropriate characteristic scales of the turbulent flow and thereby measured in \emph{inner…

Fluid Dynamics · Physics 2020-03-18 Sajjad Azimi , Tobias M. Schneider

We study visibility inside the vacant set of three models in $\mathbb R^d$ with slow decay of spatial correlations: Brownian interlacements, Poisson cylinders and Boolean model. For each of them, we obtain sharp asymptotic bounds on the…

Probability · Mathematics 2024-12-23 Yingxin Mu , Artem Sapozhnikov

Existing concentration bounds for bounded vector-valued random variables include extensions of the scalar Hoeffding and Bernstein inequalities. While the latter is typically tighter, it requires knowing a bound on the variance of the random…

Statistics Theory · Mathematics 2026-05-28 Diego Martinez-Taboada , Aaditya Ramdas

We propose a notion of multi-scale stability conditions with the goal of providing a smooth compactification of the quotient of the space of projectivized Bridgeland stability conditions by the group of autoequivalence. For the case of the…

Algebraic Geometry · Mathematics 2024-09-24 Anna Barbieri , Martin Möller , Jeonghoon So

We discuss the behavior of bounded slope quenched noise invasion models in high dimensions. We first observe that the roughness of such a steady state interface is generated by the combination of the roughness of the invasion process…

Condensed Matter · Physics 2008-02-03 Omri Gat , Zeev Olami

We shall study the chamber structure of positive cone of the albanese fiber of the moduli spaces of stable objects on an abelian surfaces via the chamber structure of stability conditions.

Algebraic Geometry · Mathematics 2014-11-14 Kota Yoshioka

Turbulent boundary layers exhibit a universal structure which nevertheless is rather complex, being composed of a viscous sub-layer, a buffer zone, and a turbulent log-law region. In this letter we present a simple analytic model of…

Chaotic Dynamics · Physics 2007-05-23 Victor S. L'vov , Itamar Procaccia , Oleksii Rudenko

In a matter-filled spacetime, perhaps with positive cosmological constant, a stable marginally outer trapped 2-sphere must satisfy a certain area inequality. Namely, as discussed in the paper, its area must be bounded above by $4\pi/c$,…

General Relativity and Quantum Cosmology · Physics 2016-07-12 Gregory J. Galloway , Abraao Mendes

We study the behaviour of Chern numbers of three dimensional terminal varieties under divisorial contractions.

Algebraic Geometry · Mathematics 2017-03-01 Paolo Cascini , Luca Tasin