Results 71 to 80 of about 6,132,114 (301)

Extensions, crossed modules and pseudo quadratic Lie type superalgebras

Extracta Mathematicae, 2022
Extensions and crossed modules of Lie type superalgebras are introduced and studied. We construct homology and cohomology theories of Lie-type superalgebras.
M. Pouye, B. Kpamegan
doaj  

An Analytical Study of Diophantine Equations of Pythagorean Form: Causal Inferences on Hypothesized Relations between Quadratic and Non-quadratic Triples [PDF]

Athens Journal of Education
In XVII century, presumably between 1637 and 1638, with a note in the margin of Diophantus’ “Arithmetica”, Pierre de Fermat stated that Diophantine equations of the Pythagorean form, x^n+y^n=z^n, have no integer solutions for n>2, and (x,y,z)>0.
Carmelo R. Cartiere
doaj   +1 more source

Subordinate Quadratic Forms and Their Complementary Forms [PDF]

Proceedings of the National Academy of Sciences, 1971
Theorem 1. For α, β on the range 1,..., μ, let Q ( z ) = * a αβ z α z β be a real valued ...
openaire   +4 more sources

Anisotropic Phonon Dynamics and Directional Transport in Actinide Van der Waals Semiconductor Uranium Triselenide

Advanced Functional Materials, EarlyView.
USe3 is introduced as an actinide van der Waals semiconductor that mirrors the quasi‐one‐dimensional physics of transition‐metal trichalcogenides. Polarization‐resolved Raman spectroscopy on exfoliated flakes maps strong in‐plane phonon anisotropy and strain‐tunable mode shifts.
Aljoscha Söll, Valentino Jadriško, Sourav Dey, Nassima Benchtaber, Kalyan Sarkar, Borna Radatović, Jan Luxa, Fedor Lipilin, Kseniia Mosina, Vojtěch Kundrát, Jakub Zalesak, Jana Vejpravová, Martin Žáček, Szymon J. Zelewski, Nikolas Antonatos, Christoph Gadermaier, José J. Baldoví, Zdeněk Sofer   +17 more
wiley   +1 more source

Statistics Learning Network Based on the Quadratic Form for SAR Image Classification

Remote Sensing, 2019
The convolutional neural network (CNN) has shown great potential in many fields; however, transferring this potential to synthetic aperture radar (SAR) image interpretation is still a challenging task. The coherent imaging mechanism causes the SAR signal
Chu He, Bokun He, Xinlong Liu, Chenyao Kang, Mingsheng Liao   +4 more
doaj   +1 more source

Models for Quadratic Algebras Associated with Second Order Superintegrable Systems in 2D [PDF]

, 2008
There are 13 equivalence classes of 2D second order quantum and classical superintegrable systems with nontrivial potential, each associated with a quadratic algebra of hidden symmetries.
Willard Miller Jr., Kalnins, Ernie G., Miller, W., Jr., Sarah Post, Post, Sarah, Ernest G. Kalnins   +5 more
core   +1 more source

Blue Upconversion Organic Light‐Emitting Diodes Achieving 1000 cd m−2 With an Operating Voltage of 2.7 V by Suppressing Interfacial Exciton Quenching

Advanced Functional Materials, EarlyView.
A triplet‐blocking layer controls triplet exciton dynamics in blue upconversion OLEDs. The layer keeps charge transfer (CT)‐generated triplet excitons inside the triplet‐triplet annihilation (TTA) host, suppresses anode‐side interfacial quenching, and increases the steady‐state triplet population.
Qing‐Jun Shui, Hiroto Iwasaki, Kosuke Anraku, Ken Albrecht, Yutaka Majima, Seiichiro Izawa   +5 more
wiley   +1 more source

On an asymmetric extension of multivariate Archimedean copulas based on quadratic form

Dependence Modeling, 2016
An important topic in Quantitative Risk Management concerns the modeling of dependence among risk sources and in this regard Archimedean copulas appear to be very useful.
Di Bernardino Elena, Rullière Didier
doaj   +1 more source

Semicrosses and quadratic forms

European Journal of Combinatorics, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

Advanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang, Christopher Wöpke, Toni Seiler, Jared Faisst, Mathias List, Meike Kuhn, Bekcy Joseph, Alexander Ehm, Dietrich R. T. Zahn, Yana Vaynzof, Eva M. Herzig, Roderick C. I. Mackenzie, Uli Würfel, Maria Saladina, Carsten Deibel   +14 more
wiley   +1 more source