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In this article we consider combinatorial maps approach to graphs on surfaces, and how between them can be establish terminological uniformity in favor of combinatorial maps in way rotations are set as base structural elements and all other…

General Mathematics · Mathematics 2012-07-25 Dainis Zeps , Paulis Kikusts

Assembling parts into an object is a combinatorial problem that arises in a variety of contexts in the real world and involves numerous applications in science and engineering. Previous related work tackles limited cases with identical unit…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Jinhwi Lee , Jungtaek Kim , Hyunsoo Chung , Jaesik Park , Minsu Cho

This is an attempt to present axioms for Euclidean geometry, aiming at the following goals: to work with geometric notions (thus not merely identify points with pairs of numbers, giving a special status to a particular coordinate system);…

History and Overview · Mathematics 2007-05-23 Eliahu Levy

We study properties of an array of numbers, called "the triangle," in which each row is formed by rotating all the numbers in the previous row to the left by $m$ positions in cyclical fashion, then appending a number to the end of the row.…

Number Theory · Mathematics 2014-09-16 Philip Jameson Graber

Methods were developed in Ref. [1] for constructing reference metrics (and from them differentiable structures) on three-dimensional manifolds with topologies specified by suitable triangulations. This note generalizes those methods by…

General Relativity and Quantum Cosmology · Physics 2024-01-03 Lee Lindblom , Oliver Rinne

Coordination geometries describe how the neighbours of a central particle are arranged around it. Such geometries can be thought to lie in an abstract topological space; a model of this space could provide a mathematical basis for…

Mathematical Physics · Physics 2023-06-28 John Çamkıran , Fabian Parsch , Glenn D. Hibbard

The purpose of this paper is to give the flavor of the subject of self-similar tilings in a relatively elementary setting, and to provide a novel method for the construction of such polygonal tilings.

Metric Geometry · Mathematics 2016-11-08 Michael Barnsley , Andrew Vince

It is not commonly realized that the algebra of complex numbers can be used in an elegant way to represent the images of ordinary 3-dimensional figures, orthographically projected to the plane. We describe these ideas here, both using…

Metric Geometry · Mathematics 2010-12-01 Michael Eastwood , Roger Penrose

Repetitive patterns are ubiquitous in natural and human-made objects, and can be created with a variety of tools and methods. Manual authoring provides unmatched degree of freedom and control, but can require significant artistic expertise…

Graphics · Computer Science 2020-12-16 Peihan Tu , Li-Yi Wei , Koji Yatani , Takeo Igarashi , Matthias Zwicker

Graphs are used in many disciplines to model the relationships that exist between objects in a complex discrete system. Researchers may wish to compare a network of interest to a "typical" graph from a family (or ensemble) of graphs which…

Combinatorics · Mathematics 2025-08-08 Catherine Greenhill

We introduce Diatoms, a technique that generates design inspiration for glyphs by sampling from palettes of mark shapes, encoding channels, and glyph scaffold shapes. Diatoms allows for a degree of randomness while respecting constraints…

Human-Computer Interaction · Computer Science 2021-07-20 Matthew Brehmer , Robert Kosara , Carmen Hull

A $\textit{polygonal curve}$ is a collection of $m$ connected line segments specified as the linear interpolation of a list of points $\{p_0, p_1, \ldots, p_m\}$. These curves may be obtained by sampling points from an oriented curve in…

Numerical Analysis · Mathematics 2021-09-10 Marcella Manivel , Milena Silva , Robert Thompson

A polarity of a projective plane is a map, often assumed to be involutive, mapping a generic point to a generic line and reciprocally. The most classical polarity is the polarity with respect to a conic, but other exist: the harmonic…

Differential Geometry · Mathematics 2013-02-08 Benoît Kloeckner

There are many analogies between codes, lattices, and vertex operator algebras. For example, extremal objects are good examples of combinatorial, spherical, and conformal designs. In this study, we investigated these objects from the aspect…

Combinatorics · Mathematics 2021-01-06 Tsuyoshi Miezaki

We review, from a didactic point of view, the definition of a toric section and the different shapes it can take. We'll then discuss some properties of this curve, investigate its analogies and differences with the most renowned conic…

History and Overview · Mathematics 2017-08-28 Luca Moroni

We initiate the computability-theoretic study of ringed spaces and schemes. In particular, we show that any Turing degree may occur as the least degree of an isomorphic copy of a structure of these kinds. We also show that these structures…

Logic · Mathematics 2011-11-10 Wesley Calvert , Valentina Harizanov , Alexandra Shlapentokh

Starting from the (apparently) elementary problem of deciding how many different topological spaces can be obtained by gluing together in pairs the faces of an octahedron, we will describe the central role played by hyperbolic geometry…

Geometric Topology · Mathematics 2011-01-18 Carlo Petronio , Damian Heard , Ekaterina Pervova

An iterative computer-aided ideation procedure is introduced, building on recent quality-diversity algorithms, which search for diverse as well as high-performing solutions. Dimensionality reduction is used to define a similarity space, in…

Neural and Evolutionary Computing · Computer Science 2018-07-26 Alexander Hagg , Alexander Asteroth , Thomas Bäck

Variational design is a well-recognized CAD technique due to the increased design efficiency. It often presents as a parametric family of CAD models. Although effective, this way of working cannot handle design requirements that go beyond…

Methodology · Statistics 2022-01-11 Qiang Zou , Qiqiang Zheng , Zhihong Tang , Shuming Gao

Simulation design is the choice of locations in parameter space at which simulations are to be run and is the first step in building an emulator capable of quickly providing estimates of simulation results for arbitrary locations in the…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-13 Michael D. Schneider , Oskar Holm , Lloyd Knox