Results 21 to 30 of about 649,167 (252)
A uniqueness theorem for stable homotopy theory [PDF]
, 1999 In this paper we study the global structure of the stable homotopy theory of spectra. We establish criteria for when the homotopy theory associated to a given stable model category agrees with the classical stable homotopy theory of spectra.
Schwede, Stefan, Shipley, Brooke
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The Journal of Engineering, 2018 A highly efficient integrated transmission unit – external generating wave movable teeth transmission − was proposed and two kinds of typical transmission types were researched.
Yali Yi, Yunfei Gao, Rui Wei, Herong Jin
doaj +1 more source
The almost isomorphism relation for simple regular rings [PDF]
, 1992 A longstanding open problem in the theory of von Neumann regular rings is the question of whether every directly finite simple regular ring must be unit-regular. Recent work on this problem has been done by P. Menal, K.C . O'Meara, and the authors.
Ara, Pere,, Goodearl, K. R.
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International Journal of Distributed Sensor Networks, 2022 As the most important segment of the spindle unit angular contact ball bearing, the preload significantly influences the bearing characteristics. Thus, the thermal-induced preload derived from the thermal expansion of spindle unit components also affects
Yanfang Dong, Feifan Chen, Ming Qiu
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Crystal structure and DFT study of (E)-N-[2-(1H-indol-3-yl)ethyl]-1-(anthracen-9-yl)methanimine
Acta Crystallographica Section E: Crystallographic Communications, 2017 The title compound, C25H20N2, (I), was synthesized from the condensation reaction of anthracene-9-carbaldehyde and tryptamine in dry ethanol. The indole ring system (r.m.s.
Md. Serajul Haque Faizi +3 more
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AIP Advances, 2022 We explore the stable configurations of atomic species on a hexagonal plane in two-dimensional (2D) binary systems. We investigate configurations for 9 and 16 atomic sites in the unit cell (3 × 3 and 4 × 4 supercells) by using the density-functional ...
Shota Ono
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Plasmon-induced transparency in ring-bar meta-atom
AIP Advances, 2018 We introduce an approach for constructing a scalable metamaterial structure, which is composed of a ring and a bar in a unit cell, and supports singular plasmon-induced transparency. The composite multilayered structure consists of coupled meta-atom with
Wan-Xia Huang +5 more
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Novel Miniaturized Equal/Unequal HMSIW Filtering Power Dividers Based on the Evanescent Mode Technique [PDF]
Radioengineering, 2021 In this paper, three miniaturized equal/unequal filtering power dividers (FPDs) applying the half-mode substrate integrated waveguide (HMSIW) and metamaterial concepts are offered. The operational method of the presented structures is based on the theory
M. Danaeian
doaj
Coupled cell networks: Boolean perspective
Biomath, 2017 During the 1980s and early 1990s, Martin Golubitsky and Ian Stewart formulated and developed a theory of "coupled cell networks" (CCNs). Their research was primarily focused onquadrupeds' gaits and they applied the framework of differential equations ...
Katarzyna Swirydowicz
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A Construction for the Normalizer of a Ring With Local Unit With Applications to the Theory of L-Algebras [PDF]
Transactions of the American Mathematical Society, 1960 Introduction. The purpose of this paper is to extend some of the author's results [4; 51 about F-rings to a wider class of lattice ordered rings called generalized F-rings. A generalized F-ring or GFR is a partially ordered real algebra R which forms a a-complete vector lattice with respect to addition, scalar multiplication, and order, and for which ...
openaire +2 more sources