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We introduce a method for obtaining new classes of free divisors from representations $V$ of connected linear algebraic groups $G$ where $\dim(G)=\dim(V)$, with $V$ having an open orbit. We give sufficient conditions that the complement of…

代数几何 · 数学 2015-01-29 James Damon , Brian Pike

A derivative structure is a nonequivalent substitutional atomic configuration derived from a given primitive cell. The enumeration of derivative structures plays an essential role in searching for the ground states in multicomponent…

计算物理 · 物理学 2025-06-25 Kohei Shinohara , Atsuto Seko , Takashi Horiyama , Masakazu Ishihata , Junya Honda , Isao Tanaka

Let X be a smooth projective variety over an algebraically closed field of positive characteristic. We prove that if D is a pseudo-effective R-divisor on X which is not numerically equivalent to the negative part in its divisorial Zariski…

代数几何 · 数学 2013-06-13 Paolo Cascini , Christopher Hacon , Mircea Mustata , Karl Schwede

The nontrivial unital composition superalgebras, of dimension 3 and 6, which exist only in characteristic 3, are obtained from the split Cayley algebra and its order 3 automorphisms, by means of the process of semisimplification of the…

量子代数 · 数学 2025-07-17 Alberto Daza-Garcia , Alberto Elduque , Umut Sayin

The fractal structure of directed percolation clusters, grown at the percolation threshold inside parabolic-like systems, is studied in two dimensions via Monte Carlo simulations. With a free surface at y=\pm Cx^k and a dynamical exponent…

统计力学 · 物理学 2009-10-22 C. Kaiser , L. Turban

An abelian 4D, $\mathcal{N}$ = 4 vector supermultiplet allows for a duality transformation to be applied to one of its spin-0 states. The resulting theory can be described as an abelian 4D, $\mathcal{N}$ = 4 vector-tensor supermultiplet. It…

高能物理 - 理论 · 物理学 2025-04-28 S. James Gates, , Kory Stiffler

Representations of four dimensional superconformal groups are constructed as fields on many different superspaces, including super Minkowski space, chiral superspace, harmonic superspace and analytic superspace. Any unitary irreducible…

高能物理 - 理论 · 物理学 2009-11-07 P. J. Heslop

We consider zero temperature packings of soft spheres, that undergo a jamming to unjamming transition as a function of packing fraction. We compare differences in the structure, as measured from the contact statistics, of a finite subsystem…

软凝聚态物质 · 物理学 2019-08-14 Daniel Hexner , Pierfrancesco Urbani , Francesco Zamponi

For arbitrary level $N$, we relate the generating series of codimension 2 special cycles on $\mathcal{X}_{0}(N)$ to the derivatives of a genus 2 Eisenstein series, especially the singular terms of both sides. On the analytic side, we use…

数论 · 数学 2024-01-15 Baiqing Zhu

We introduce the conformal field theories that describe the shadows of the lowest dimension composites made out of massless free scalars and fermions in $d$ dimensions. We argue that these theories can be consistently defined as free CFTs…

高能物理 - 理论 · 物理学 2016-09-21 Andrea Guerrieri , Anastasios C. Petkou , Congkao Wen

In this paper, we present high-level overviews of tile-based self-assembling systems capable of producing complex, infinite, aperiodic structures known as discrete self-similar fractals. Fractals have a variety of interesting mathematical…

新兴技术 · 计算机科学 2016-12-26 Jacob Hendricks , Meagan Olsen , Matthew J. Patitz , Trent A. Rogers , Hadley Thomas

No existing spherical convolutional neural network (CNN) framework is both computationally scalable and rotationally equivariant. Continuous approaches capture rotational equivariance but are often prohibitively computationally demanding.…

计算机视觉与模式识别 · 计算机科学 2023-01-31 Jeremy Ocampo , Matthew A. Price , Jason D. McEwen

Inversive geometry can be used to generate exactly self-similar space-filling sphere packings. We present a construction method in two dimensions and generalize it to search for packings in higher dimensions. We newly discover 29…

其他凝聚态物理 · 物理学 2016-07-29 D. V. Stäger , H. J. Herrmann

A macroscopic characterization of fractals showing up a structural transition from dense to multibranched growth is made using optical diffraction theory. Such fractals are generated via the numerical solution of the 2D Poisson and…

凝聚态物理 · 物理学 2009-10-22 F. Perez-Rodriguez , Wei Wang , E. Canessa

We discuss $\mathcal{N}=1$ Klein and Klein-Conformal superspaces in $D=(2,2)$ space-time dimensions, realizing them in terms of their functor of points over the split composition algebra $\mathbb{C}_{s}$. We exploit the observation that…

高能物理 - 理论 · 物理学 2017-05-24 Rita Fioresi , Emanuele Latini , Alessio Marrani

We consider a higher-derivative generalization of disformal transformations in $D$-dimensional spacetime and clarify the conditions under which they form a group with respect to the matrix product and the functional composition. These…

广义相对论与量子宇宙学 · 物理学 2022-01-06 Kazufumi Takahashi , Hayato Motohashi , Masato Minamitsuji

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

In this paper a construction of a metrizable zero-dimensional CDH space $X$ such that $X^2$ has exactly $\mathfrak{c}$ countable dense subsets is provided. Furthermore, it is shown that the space can be constructed consistently co-analytic.…

一般拓扑 · 数学 2024-11-27 Michal Hevessy

Quantum spaces with $\frak{su}(2)$ noncommutativity can be modelled by using a family of $SO(3)$-equivariant differential $^*$-representations. The quantization maps are determined from the combination of the Wigner theorem for $SU(2)$ with…

数学物理 · 物理学 2018-02-22 Timothé Poulain , Jean-Christophe Wallet

This paper examines the causal structure of the commutator of two string fields, in free light-cone string field theory. By treating the commutator as a distribution on infinite dimensional loop space, it is shown that the commutator…

高能物理 - 理论 · 物理学 2009-10-22 D. A. Lowe