Results 21 to 30 of about 246,659 (296)

Hodge structure on twisted cohomologies and twisted Riemann inequalities I [PDF]

open access: yesNagoya Mathematical Journal, 1999
AbstractWe show the twisted cohomology onhas a natural polarized Hodge structure and hence derive the analogues of Riemann’s equality and inequailty.
Hanamura, Masaki, Yoshida, Masaaki
openaire   +2 more sources

Novel structural design method inspired by DNA and origami

open access: yesResults in Engineering, 2019
In chiral metamaterials, the twist per axial strain (TPAS) is an important index to evaluate the tension-torsion coupling effect. Most chiral structures reported in current literatures have the appearance of lattice architectures, which possess limited ...
Nan Yang
doaj   +1 more source

Novel compact waveguide filtering twist for computer numerical control machining

open access: yesElectronics Letters, 2023
In this letter, the authors present a novel compact waveguide filtering twist that can be readily fabricated from metal using the computer numerical control (CNC) machining process.
Yi Zhang   +5 more
doaj   +1 more source

Atomic simulations of twist grain boundary structures and deformation behaviors in aluminum

open access: yesAIP Advances, 2017
The structures and behaviors of grain boundaries (GBs) have profound effects on the mechanical properties of polycrystalline materials. In this paper, twist GBs in aluminum were investigated with molecular dynamic simulations to reveal their atomic ...
Qing Yin   +3 more
doaj   +1 more source

Implicative twist-structures

open access: yesAlgebra universalis, 2014
The twist-structure construction is used to represent algebras related to non-classical logics (e.g., Nelson algebras, bilattices) as a special kind of power of better-known algebraic structures (distributive lattices, Heyting algebras). We study a specific type of twist-structure (called implicative twist-structure) obtained as a power of a ...
openaire   +5 more sources

Propagation characteristics of periodic structures possessing twist and polar glide symmetries

open access: yesEPJ Applied Metamaterials, 2019
In this article, we provide an overview of the current state of the research in the area of twist symmetry. This symmetry is obtained by introducing multiple periods into the unit cell of a periodic structure through a rotation of consecutive periodic ...
Dahlberg Oskar   +3 more
doaj   +1 more source

Multipoint lightcone bootstrap from differential equations

open access: yesJournal of High Energy Physics, 2023
One of the most striking successes of the lightcone bootstrap has been the perturbative computation of the anomalous dimensions and OPE coefficients of double-twist operators with large spin.
Apratim Kaviraj   +3 more
doaj   +1 more source

Non-involutive twist-structures [PDF]

open access: yesLogic Journal of the IGPL, 2018
Abstract A recent paper by Jakl, Jung and Pultr (2016, Electron. Notes Theor. Comput. Sci., 325, 201–219) succeeded for the first time in establishing a very natural link between bilattice logic and the duality theory of d-frames and bitopological spaces.
Umberto Rivieccio   +2 more
openaire   +1 more source

Triply-Periodic Smectics [PDF]

open access: yes, 2006
Twist-grain-boundary phases in smectics are the geometrical analogs of the Abrikosov flux lattice in superconductors. At large twist angles, the nonlinear elasticity is important in evaluating their energetics.
Kamien, Randall D.   +1 more
core   +4 more sources

Tunable electronic structure in twisted WTe2/WSe2 heterojunction bilayer

open access: yesAIP Advances, 2022
Electronic structures of non-twisted and twisted WTe2/WSe2 heterojunction bilayers were investigated using first-principles calculations. Our results show that, for the twisted WTe2/WSe2 heterojunction bilayer, the bandgaps are all direct bandgaps, and ...
Zi-Si Chen   +5 more
doaj   +1 more source

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