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Given a flag in each of the vertex-transitive tessellations of the Euclidean plane by regular polygons, we determine the flag stabilizer under the action of the automorphism group of a regular cover. In so doing we give a presentation of…

Combinatorics · Mathematics 2012-06-29 Gordon Williams , Daniel Pellicer

We introduce a family of domino tilings that includes tilings of the Aztec diamond and pyramid partitions as special cases. These tilings live in a strip of $\mathbb{Z}^2$ of the form $1 \leq x-y \leq 2\ell$ for some integer $\ell \geq 1$,…

Combinatorics · Mathematics 2017-09-11 Jérémie Bouttier , Guillaume Chapuy , Sylvie Corteel

This report concerns the problem of dimensionality reduction through information geometric methods on statistical manifolds. While there has been considerable work recently presented regarding dimensionality reduction for the purposes of…

Machine Learning · Statistics 2008-09-30 Kevin M. Carter , Raviv Raich , Alfred O. Hero

Brane tilings, sometimes called dimer models, are a class of bipartite graphs on a torus which encode the gauge theory data of four-dimensional SCFTs dual to D3-branes probing toric Calabi--Yau threefolds. An efficient way of encoding this…

High Energy Physics - Theory · Physics 2011-06-20 Amihay Hanany , Yang-Hui He , Vishnu Jejjala , Jurgis Pasukonis , Sanjaye Ramgoolam , Diego Rodriguez-Gomez

We present a construction of a family of non-periodic tilings using elementary tools such as modular arithmetic and vector geometry. These tilings exhibit a distinct type of structural regularity, which we term modulo-staggered rotational…

Combinatorics · Mathematics 2025-06-10 Miki Imura

Keller's conjecture on cube tilings asserted that, in any tiling of $\mathbb{R}^d$ by unit cubes, there must exist two cubes that share a $(d-1)$-dimensional face. This is now known to be true in dimensions $d\leq 7$ and false for $d\geq…

Combinatorics · Mathematics 2024-04-22 Benjamin Bruce , Izabella Laba

Tilings of a surface of negative Euler characteristic by n-gons with n\ge 7 is a finite problem. We develop the algorithm for finding all the tilings for fixed number of tiles and present the calculation for tilings of surfaces of small…

Combinatorics · Mathematics 2026-04-29 Chunlin Li , Erxiao Wang , Wu Jie , Min Yan

There are fifteen edge-to-edge tilings of the sphere by congruent pentagons with the edge combination $a^3b^2$: five one-parameter families of pentagonal subdivision tilings, and ten flip modifications of three special cases of two…

Metric Geometry · Mathematics 2021-06-29 Erxiao Wang , Min Yan

Topological defects, such as disclination lines in nematic liquid crystals, are fundamental to many physical systems and applications. In this work, we study the behavior of nematic disclinations in thin parallel-plate geometries with…

Soft Condensed Matter · Physics 2025-08-05 Yehonatan Tsubery , Hillel Aharoni

A combinatorial tiling of the sphere is naturally given by an embedded graph. We study the case that each tile has exactly five edges, with the ultimate goal of classifying combinatorial tilings of the sphere by geometrically congruent…

Combinatorics · Mathematics 2014-05-13 Min Yan

In this paper, we consider the set of all domino tilings of a cubiculated region. The primary question we explore is: How can we move from one tiling to another? Tiling spaces can be viewed as spaces of subgraphs of a fixed graph with a…

Combinatorics · Mathematics 2021-02-09 Elizabeth Gross , Nicole Yamzon

We compute the Cech cohomology with integer coefficients of one-dimensional tiling spaces arising from not just one, but several different substitutions, all acting on the same set of tiles. These calculations involve the introduction of a…

Dynamical Systems · Mathematics 2015-10-06 Franz Gähler , Gregory R. Maloney

An irregular vertex in a tiling by polygons is a vertex of one tile and belongs to the interior of an edge of another tile. In this paper we show that for any integer $k\geq 3$, there exists a normal tiling of the Euclidean plane by convex…

Metric Geometry · Mathematics 2019-12-02 Dirk Frettlöh , Alexey Glazyrin , Zsolt Lángi

A set of tiles for covering a surface is composed of two types of tiles. The base shape of each one of them is a diamond or rhombus, both with angles 60 and 120 degrees. They are distinguished by labeling one as an acute diamond with a base…

Metric Geometry · Mathematics 2015-03-11 Theo P. Schaad

We introduce a formalism for handling general spaces of hierarchical tilings, a category that includes substitution tilings, Bratteli-Vershik systems, S-adic transformations, and multi-dimensional cut-and-stack transformations. We explore…

Dynamical Systems · Mathematics 2018-07-10 Natalie Priebe Frank , Lorenzo Sadun

We first prove that the set of domino tilings of a fixed finite figure is a distributive lattice, even in the case when the figure has holes. We then give a geometrical interpretation of the order given by this lattice, using (not…

Combinatorics · Mathematics 2007-05-23 Sebastien Desreux , Martin Matamala , Ivan Rapaport , Eric Remila

We study, theoretically and experimentally, a 1-parameter family of transformations and their limiting vector field on the space of plane polygons. These transformations are discrete analogs of completely integrable transformation on closed…

Dynamical Systems · Mathematics 2024-02-27 Maxim Arnold , Lael Costa , Serge Tabachnikov

We generalise the notion of a Barge-Diamond complex, in the one-dimensional case, to a mixed system of tiling substitutions. This gives a way of describing the associated tiling space as an inverse limit of Barge-Diamond complexes. We give…

Algebraic Topology · Mathematics 2020-04-14 Dan Rust

The problem of rectangle tiling binary arrays is defined as follows. Given an $n \times n$ array $A$ of zeros and ones and a natural number $p$, our task is to partition $A$ into at most $p$ rectangular tiles, so that the maximal weight of…

Computational Geometry · Computer Science 2024-07-17 Pratik Ghosal , Syed Mohammad Meesum , Katarzyna Paluch

We consider two families of planar self-similar tilings of different nature: the tilings consisting of translated copies of the fractal sets defined by an iterated function system, and the tilings obtained as a geometrical realization of a…

Dynamical Systems · Mathematics 2020-03-17 Nicolas Bédaride , Arnaud Hilion , Timo Jolivet