Results 51 to 60 of about 18,642 (313)

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

open access: yesAdvanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang   +7 more
wiley   +1 more source

Algebraic Cayley graphs over finite fields

open access: yesFinite Fields and Their Applications, 2014
A new algebraic Cayley graph is constructed using finite fields. Its connectedness and diameter bound are studied via Weil's estimate for character sums. These graphs provide a new source of expander graphs, extending classical results of Chung.
Lu, M, Wan, D, Wang, L-P, Zhang, X-D
openaire   +5 more sources

Traction Force Microscopy for Viscoelastic Substrates: A Semi‐Analytical Method

open access: yesAdvanced Science, EarlyView.
A semi‐analytical viscoelastic traction force microscopy framework is introduced for quantifying time‐resolved cell tractions on flat finite‐thickness substrates. The method generalizes elastic traction force microscopy to Generalized Maxwell materials, identifies when elastic approximations remain valid and, when they do not, shows that inferred ...
Adrià Villacrosa‐Ribas   +10 more
wiley   +1 more source

$\mathbf {5 \times 5}$ -graded Lie algebras, cubic norm structures and quadrangular algebras

open access: yesForum of Mathematics, Sigma
We study simple Lie algebras generated by extremal elements, over arbitrary fields of arbitrary characteristic. We show the following: (1) If the extremal geometry contains lines, then the Lie algebra admits a $5 \times 5$ -grading that can be ...
Tom De Medts, Jeroen Meulewaeter
doaj   +1 more source

The Variety of Two-dimensional Algebras Over an Algebraically Closed Field [PDF]

open access: yesCanadian Journal of Mathematics, 2018
Abstract The work is devoted to the variety of two-dimensional algebras over algebraically closed fields. First we classify such algebras modulo isomorphism. Then we describe the degenerations and the closures of certain algebra series in the variety of two-dimensional algebras.
Kaygorodov, Ivan, Volkov, Yury
openaire   +1 more source

Graded identities for the matrix algebra of order n over an infinite field

open access: yes, 2015
The algebra M,(K) of all square matrices of order n over a field K has a natural Z(n)-grading. In this paper, we generalize a result of Vasilovsky about the Z(n)-graded identities of the algebra M,(K).
Azevedo, SS
core   +1 more source

On Brauer algebra simple modules over the complex field [PDF]

open access: yes, 2016
This paper gives two results on the simple modules for the Brauer algebra Bn(δ) over the complex field. First we describe the module structure of the restriction of all simple Bn(δ)-modules to Bn−1(δ).
Martin, P.   +3 more
core   +1 more source

Ultra‐Wide‐Field Noninvasive Imaging Through Scattering Media Via Physics‐Guided Deep Learning

open access: yesAdvanced Science, EarlyView.
We propose a physics‐guided adaptive dual‐domain learning method for ultra‐wide‐field noninvasive imaging through scattering media, namely UNI‐Net. Our method not only reduces the requirement for real experimental data by an order of magnitude but also enables clear imaging of complex scenes with an ultra‐large field of view, which is 164 times the OME
Lintao Peng   +5 more
wiley   +1 more source

Theorem on the norm of elements of spinor groups

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
In this article we consider Clifford's algebra over the field of real numbers of finite dimension. We define the operation of Hermitian conjugation for the elements of Clifford's algebra.
D. S. Shirokov
doaj   +3 more sources

The blocks of the periplectic Brauer algebra in positive characteristic [PDF]

open access: yes, 2019
We determine the blocks of the periplectic Brauer algebra over any field of odd ...
Cox, Anton   +9 more
core   +1 more source

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