Results 21 to 30 of about 135,287 (264)

How the latent geometry of a biological network provides information on its dynamics: the case of the gene network of chronic myeloid leukaemia

open access: yesFrontiers in Cell and Developmental Biology, 2023
Background: The concept of the latent geometry of a network that can be represented as a graph has emerged from the classrooms of mathematicians and theoretical physicists to become an indispensable tool for determining the structural and dynamic ...
Paola Lecca   +3 more
doaj   +1 more source

Hyperbolic Geometry [PDF]

open access: yes, 2013
The author considers the space of relativistic velocities in the Minkowski vector space \(\mathbb{R}^{1,n}\) as the unit ball \(B^n \subset \mathbb{R}^n \) with the non-commutative non-associative invertible binary operation \(\oplus\), defined by the relativistic addition of velocities.
openaire   +4 more sources

Conformal hyperbolic optics

open access: yesPhysical Review Research, 2021
Hyperbolic metamaterials have attracted considerable interest in the research community for their peculiar ability to enhance control of electromagnetic waves' propagation.
Shahram Dehdashti   +7 more
doaj   +1 more source

The Formulas of Möbius-Bretschneider and Möbius-Cagnoli in the Poincaré Disc Model of Hyperbolic Geometry

open access: yesAl-Mustansiriyah Journal of Science, 2021
In this paper, we present two gyroarea formulas (Möbius-Bretschneider’s formula and Möbius-Cagnoli’s formula) for Möbius gyroquadrilaterals in the Poincaré disc model of hyperbolic geometry.
Gülcan Balakan, Oğuzhan Demirel
doaj   +1 more source

Sampling Geometric Inhomogeneous Random Graphs in Linear Time [PDF]

open access: yes, 2017
Real-world networks, like social networks or the internet infrastructure, have structural properties such as large clustering coefficients that can best be described in terms of an underlying geometry.
Bringmann, Karl   +2 more
core   +2 more sources

Hyperbolic Geometry

open access: yes, 2020
This was the preliminary version of a textbook, at the stage of rough draft.
Parisa Hariri   +2 more
  +5 more sources

An Instrument in Hyperbolic Geometry [PDF]

open access: yesProceedings of the American Mathematical Society, 1962
In addition to straight edge and compasses, the classical instruments of Euclidean geometry, we have in hyperbolic geometry the horocompass and the hypercompass. By a straight edge, or ruler, we draw the line joining any two distinct points, and by the compasses we construct a circle with given center and radius.
openaire   +1 more source

A New Hyperbolic Area Formula of a Hyperbolic Triangle and Its Applications

open access: yesJournal of Mathematics, 2014
We study some characterizations of hyperbolic geometry in the Poincaré disk. We first obtain the hyperbolic area and length formula of Euclidean disk and a circle represented by its Euclidean center and radius.
Hui Bao, Xingdi Chen
doaj   +1 more source

Partialy Paradoxist Smarandache Geometries [PDF]

open access: yes, 1996
A paradoxist Smarandache geometry combines Euclidean, hyperbolic, and elliptic geometry into one space along with other non-Euclidean behaviors oflines that would seem to require a discrete space.
Iseri, Howard
core   +1 more source

An Introduction to Hyperbolic Barycentric Coordinates and their Applications

open access: yes, 2013
Barycentric coordinates are commonly used in Euclidean geometry. The adaptation of barycentric coordinates for use in hyperbolic geometry gives rise to hyperbolic barycentric coordinates, known as gyrobarycentric coordinates.
A. Einstein   +30 more
core   +1 more source

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