Results 81 to 90 of about 1,631,121 (352)

Elementary notions of lattice trigonometry [PDF]

open access: yes, 2006
In this paper we study properties of lattice trigonometric functions of lattice angles in lattice geometry. We introduce the definition of sums of lattice angles and establish a necessary and sufficient condition for three angles to be the angles of some
Karpenkov, Oleg
core   +5 more sources

The Emergence of the Hexagonal Lattice in Two-Dimensional Wigner Fragments [PDF]

open access: green, 2023
Miguel Escobar Azor   +6 more
openalex   +1 more source

Transversal Lattices [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2008
A flat of a matroid is cyclic if it is a union of circuits; such flats form a lattice under inclusion and, up to isomorphism, all lattices can be obtained this way. A lattice is a Tr-lattice if all matroids whose lattices of cyclic flats are isomorphic to it are transversal. We investigate some sufficient conditions for a lattice to be a Tr-lattice; a
openaire   +3 more sources

Engineering Deformation and Failure in Diamond Triply Periodic Minimal Surface Lattices via 3D Wall‐Thickness Grading

open access: yesAdvanced Engineering Materials, EarlyView.
The work demonstrates that strategic wall‐thickness grading in diamond triply periodic minimal surface lattices enables precise tuning of deformation and failure behavior under compression. Different gradation patterns guide how and where the structure collapses, improving energy absorption or promoting controlled brittle failure.
Giovanni Rizza   +3 more
wiley   +1 more source

The static quark potential from the gauge independent Abelian decomposition

open access: yesNuclear Physics B, 2015
We investigate the relationship between colour confinement and the gauge independent Cho–Duan–Ge Abelian decomposition. The decomposition is defined in terms of a colour field n; the principle novelty of our study is that we have used a unique definition
Nigel Cundy   +3 more
doaj   +1 more source

Local Covering Optimality of Lattices: Leech Lattice versus Root Lattice E8 [PDF]

open access: yes, 2004
We show that the Leech lattice gives a sphere covering which is locally least dense among lattice coverings. We show that a similar result is false for the root lattice E8.
Schuermann, Achill, Vallentin, Frank
core   +2 more sources

3D‐Printed Serial Snap‐Through Architectures for Programmable Mechanical Response

open access: yesAdvanced Engineering Materials, EarlyView.
A serial snap‐through architecture is realized using compact 3D‐printed von Mises truss units arranged in a staged cascade. Their geometry and boundary conditions program multistage mechanical responses with plateaux and re‐hardening regimes. An inverted‐compliance model predicts these behaviors and enables analytical design of programmable force ...
Filipe A. Santos
wiley   +1 more source

Mots qu- : emplois et paradigme(s) [PDF]

open access: yesSHS Web of Conferences
Les mots qu-sont un groupe de mots ayant la même initiale phonétique [k], une origine commune (racine indo-européenne kw-), et des emplois analogues, interrogatifs (ou exclamatifs) et subordonnants. L’article se propose de faire le point en montrant à la
Le Goffic Pierre
doaj   +1 more source

Microstructural Characteristics of Eri Silk Fibre in Different Layers of Cocoon

open access: yesJournal of Natural Fibers, 2023
Five layers, i.e. floss, upper, middle, lower and pelade, exist in cocoon shell from outer to inner portion. An attempt has been made for assessment of microstructural characteristics of eri silk fiber in different layers of cocoons.
Debasis Chattopadhyay   +2 more
doaj   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

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