Results 11 to 20 of about 1,212,069 (375)

An inequality for regular near polygons [PDF]

open access: greenEuropean Journal of Combinatorics, 2003
Let $G$ denote a near-polygon distance-regular graph with diameter $d\geq 3$, valency $k$ and intersection numbers $a_1>0$, $c_2>1$. Let $ _1$ denote the second largest eigenvalue for the adjacency matrix of $G$. We show $ _1$ is at most $(k-a_1-c_2)/(c_2-1)$. We show the following are equivalent: (i) Equality is attained above; (ii) $G$ is $Q$-
Paul Terwilliger, Chih-wen Weng
openalex   +4 more sources

Distance Distributions in Regular Polygons [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2013
This paper derives the exact cumulative density function of the distance between a randomly located node and any arbitrary reference point inside a regular $\el$-sided polygon. Using this result, we obtain the closed-form probability density function (PDF) of the Euclidean distance between any arbitrary reference point and its $n$-th neighbour node ...
Khalid, Zubair, Durrani, Salman
openaire   +7 more sources

Formation of a 3D Particle Array Actuated by Ultrasonic Traveling Waves in a Regular Polygon Resonator [PDF]

open access: yesMicromachines, 2022
Acoustic radiation forces have been extensively studied regarding static particles, cell patterning, and dynamic transportation. Compared with standing wave manipulation, traveling wave manipulation can be more easily modulated in real time and has no ...
Fei Wan   +7 more
doaj   +2 more sources

Ergodicity of polygonal slap maps [PDF]

open access: yes, 2013
Polygonal slap maps are piecewise affine expanding maps of the interval obtained by projecting the sides of a polygon along their normals onto the perimeter of the polygon. These maps arise in the study of polygonal billiards with non-specular reflections laws.
Del Magno, Gianluigi   +3 more
arxiv   +6 more sources

Buckling loads of columns of regular polygon cross-section with constant volume and clamped ends

open access: hybridElectronic Journal of Structural Engineering, 2002
A numerical method is developed for calculating the buckling loads of tapered columns of regular polygon cross-section with constant volume and both clamped ends. The linear, parabolic and sinusoidal tapers are considered in numerical examples. From the
Byoung Koo Lee, Sang Jin Oh, Guangfan Li
doaj   +3 more sources

Card-Based Protocols Using Regular Polygon Cards [PDF]

open access: greenIEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences, 2017
SUMMARY Cryptographic protocols enable participating parties to compute any function of their inputs without leaking any information beyond the output. A card-based protocol is a cryptographic protocol implemented by physical cards.
Kazumasa Shinagawa   +7 more
semanticscholar   +2 more sources

Regular Polygonal Complexes in Space, I [PDF]

open access: greenTransactions of the American Mathematical Society, 2009
A polygonal complex in euclidean 3-space is a discrete polyhedron-like structure with finite or infinite polygons as faces and finite graphs as vertex-figures, such that a fixed number r of faces surround each edge. It is said to be regular if its symmetry group is transitive on the flags.
Daniel Pellicer, Egon Schulte
openalex   +7 more sources

Outer billiard outside regular polygons [PDF]

open access: greenJournal of the London Mathematical Society, 2011. Number 83 volume 2, 301-323, 2009
We consider outer billiard outside regular convex polygons. We deal with the case of regular polygons with $\{3,4,5,6,10\}$ sides, and we describe the symbolic dynamics of the map and compute the complexity of the language.
Nicolas Bédaride, Julien Cassaigne
arxiv   +3 more sources

Regular ternary polygonal forms [PDF]

open access: greenThe Ramanujan Journal, 2019
Inspired by Dickson's classification of regular ternary quadratic forms, we prove that there are no primitive regular $m$-gonal forms when $m$ is sufficiently large. In order to do so, we construct sequences of primes that are inert in a certain quadratic field and show that they satisfy a certain inequality bounding the next prime by the product of ...
Zilong He, Ben Kane
openalex   +5 more sources

Circle packing in regular polygons

open access: greenPhysics of Fluids, 2022
We study the packing of a large number of congruent and non-overlapping circles inside a regular polygon. We have devised efficient algorithms that allow one to generate configurations of N densely packed circles inside a regular polygon, and we have carried out intensive numerical experiments spanning several polygons (the largest number of sides ...
Paolo Amore
openalex   +4 more sources

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