Results 81 to 90 of about 49,400 (294)

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

open access: yesAdvanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal   +10 more
wiley   +1 more source

Multi‐Pathway Upconversion Emission in Symmetry‐Broken Nanocavities: Broadband Multiresonant Enhancement and Anti‐Correlated Interfacial Sensitivity

open access: yesAdvanced Functional Materials, EarlyView.
Symmetry‐broken plasmonic nanoantenna arrays achieve broadband multiresonant enhancement of second harmonic generation (SHG), third harmonic generation (THG), and upconversion photoluminescence (UCPL), under femtosecond laser excitation across the near‐infrared range (1000–1600 nm).
Elieser Mejia   +9 more
wiley   +1 more source

Attempts to use the power of modern group theory in finite simple groups for calculating Galois groups

open access: yesLe Matematiche, 2000
This is the text of my lectures in Catania (Sicily) in April 2001, and at a Group Theory Conference in Oberwohlfach (Germany) in April 1997. The Catania visit was in honor of the 60-th birthday of my good friend Sylvio Greco.
Shreeram Abhyankar
doaj  

Introduction to Sporadic Groups

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2011
This is an introduction to finite simple groups, in particular sporadic groups, intended for physicists. After a short review of group theory, we enumerate the 1+1+16=18 families of finite simple groups, as an introduction to the sporadic groups.
Luis J. Boya
doaj   +1 more source

Generators for maximal subgroups of Conway group Co1

open access: yesOpen Mathematics, 2019
The Conway groups are the three sporadic simple groups Co1, Co2 and Co3. There are total of 22 maximal subgroups of Co1 and generators of 6 maximal subgroups are provided in web Atlas of finite simple groups.
Yasin Faisal   +3 more
doaj   +1 more source

Random Generation of Finite Simple Groups

open access: yesJournal of Algebra, 1999
\textit{J. D. Dixon} [Math. Z. 110, 199-205 (1969; Zbl 0176.29901)] conjectured that if two elements are randomly chosen from a finite simple group \(G\), they will generate \(G\) with probability \(\to 1\) as \(|G|\to\infty\). Dixon [ibid.] proved this if \(G\) is an alternating group. \textit{W. M. Kantor} and \textit{A. Lubotzky} [Geom. Dedicata 36,
Robert M. Guralnick   +3 more
openaire   +3 more sources

High‐Entropy Magnetism of Murunskite

open access: yesAdvanced Functional Materials, EarlyView.
The study of murunskite (K2FeCu3S4) reveals that its magnetic and orbital order emerges in a simple I4/mmm crystal structure with complete disorder in the transition metal positions. Mixed‐valence Fe ions randomly occupy 1/4 of the tetrahedral sites, with the remaining 3/4 being filled by non‐magnetic Cu+ ions.
Davor Tolj   +18 more
wiley   +1 more source

Triangle groups and finite simple groups

open access: yes, 2009
This thesis contains a study of the spaces of homomorphisms from hyperbolic triangle groups to finite groups of Lie type which leads to a number of deterministic, asymptotic, and probabilistic results on the (p1, p2, p3)-generation problem for finite groups of Lie type.
Marion, Claude Miguel Emmanuel   +1 more
openaire   +4 more sources

The Bogomolov Multiplier of Finite Simple Groups [PDF]

open access: yes, 2009
The subgroup of the Schur multiplier of a finite group G consisting of all cohomology classes whose restriction to any abelian subgroup of G is zero is called the Bogomolov multiplier of G. We prove that if G is quasisimple or almost simple, its Bogomolov multiplier is trivial except for the case of certain covers of PSL(3,4).
openaire   +4 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

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