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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…

Algebraic Geometry · Mathematics 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…

Computational Physics · Physics 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…

Algebraic Geometry · Mathematics 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…

Quantum Algebra · Mathematics 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…

Statistical Mechanics · Physics 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…

High Energy Physics - Theory · Physics 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…

High Energy Physics - Theory · Physics 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…

Soft Condensed Matter · Physics 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…

Number Theory · Mathematics 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…

High Energy Physics - Theory · Physics 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…

Emerging Technologies · Computer Science 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.…

Computer Vision and Pattern Recognition · Computer Science 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…

Other Condensed Matter · Physics 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…

Condensed Matter · Physics 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…

High Energy Physics - Theory · Physics 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…

General Relativity and Quantum Cosmology · Physics 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…

General Topology · Mathematics 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.…

General Topology · Mathematics 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…

Mathematical Physics · Physics 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…

High Energy Physics - Theory · Physics 2009-10-22 D. A. Lowe
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