Results 21 to 30 of about 136,986 (279)

A Note on Almost Anti-Periodic Functions in Banach Spaces [PDF]

Kragujevac Journal of Mathematics, 2020
The main aim of this note is to introduce the notion of an almost anti-periodic function in Banach space. We prove some characterizations for this class of functions, investigating also its relationship with the classes of anti-periodic functions and almost periodic functions in Banach spaces.
Kostić, M., Velinov, D.
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Laser Interference Lithography—A Method for the Fabrication of Controlled Periodic Structures

Nanomaterials, 2023
A microstructure determines macro functionality. A controlled periodic structure gives the surface specific functions such as controlled structural color, wettability, anti-icing/frosting, friction reduction, and hardness enhancement.
Ri Liu, Liang Cao, Dongdong Liu, Lu Wang, Sadaf Saeed, Zuobin Wang   +5 more
doaj   +1 more source

Anti-periodic solutions for nonlinear evolution inclusions

Journal of Evolution Equations, 2018
The authors consider the nonlinear anti-periodic evolution inclusion \[ \begin{aligned} & -u'(t)\in A(t,u(t))+F(t,u(t))\text{ a.e. on }I=[0,T],\\ & u(0)=-u(T),\end{aligned}\eqno{(1)} \] where \(\left( X,H,X^{\ast }\right) \) is an evolution triple, \(A:I\times X\rightarrow 2^{X^{\ast }}\) and \(F:I\times X\rightarrow 2^{H}\). \ It is not assumed that \(
Gasiński, Leszek, Papageorgiou, Nikolaos S.   +1 more
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A class of rings which are algebric over the integers

International Journal of Mathematics and Mathematical Sciences, 1979
A well-known theorem of N. Jacobson states that any periodic associative ring is commutative. Several authors (most notably Kaplansky and Herstein) generalized the “periodic polynomial” condition and were still able to conclude that the rings under ...
Douglas F. Rall
doaj   +1 more source

Temperature chaos is a non-local effect [PDF]

, 2016
Temperature chaos plays a role in important effects, like for example memory and rejuvenation, in spin glasses, colloids, polymers. We numerically investigate temperature chaos in spin glasses, exploiting its recent characterization as a rare-event ...
Fernandez, L. A., Marinari, E., Martin-Mayor, V., Parisi, G., Yllanes, D.   +4 more
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Anti–Periodic Solutions for Clifford–Valued High–Order Hopfield Neural Networks with State–Dependent and Leakage Delays

International Journal of Applied Mathematics and Computer Science, 2020
A class of Clifford-valued high-order Hopfield neural networks (HHNNs) with state-dependent and leakage delays is considered. First, by using a continuation theorem of coincidence degree theory and the Wirtinger inequality, we obtain the existence of ...
Huo Nina, Li Bing, Li Yongkun
doaj   +1 more source

Linear difference equations, frieze patterns, and the combinatorial Gale transform

Forum of Mathematics, Sigma, 2014
We study the space of linear difference equations with periodic coefficients and (anti)periodic solutions. We show that this space is isomorphic to the space of tame frieze patterns and closely related to the moduli space of configurations of points in ...
SOPHIE MORIER-GENOUD, VALENTIN OVSIENKO, RICHARD EVAN SCHWARTZ, SERGE TABACHNIKOV   +3 more
doaj   +1 more source

Anti-periodic behavior for quaternion-valued delayed cellular neural networks

Advances in Difference Equations, 2021
In this manuscript, quaternion-valued delayed cellular neural networks are studied. Applying the continuation theorem of coincidence degree theory, inequality techniques and a Lyapunov function approach, a new sufficient condition that guarantees the ...
Zhenhua Duan, Changjin Xu
doaj   +1 more source

Gauge-Higgs Dark Matter

, 2009
When the anti-periodic boundary condition is imposed for a bulk field in extradimensional theories, independently of the background metric, the lightest component in the anti-periodic field becomes stable and hence a good candidate for the dark matter in
A Aranda, A Delgado, A Falkowski, AD Medina, C Amsler, C Csáki, CA Scrucca, CA Scrucca, CS Lim, DB Fairlie, DB Fairlie, E Komatsu, G Burdman, G Cacciapaglia, G Jungman, G Panico, G Panico, GF Giudice, GR Dvali, H Hatanaka, H Ohki, I Antoniadis, I Gogoladze, I Gogoladze, J Angle, K Agashe, K Agashe, K Agashe, K Hasegawa, K Kojima, K Takenaga, K-w Choi, K-y Oda, L Randall, M Carena, M Kubo, M Regis, MS Carena, MS Carena, N Arkani-Hamed, N Haba, N Haba, N Haba, N Haba, N Haba, N Haba, N Haba, N Haba, N Maru, N Okada, Naoyuki Haba, Nobuchika Okada, NS Manton, NV Krasnikov, P Gondolo, R Contino, Shigeki Matsumoto, T Appelquist, T Gherghetta, Toshifumi Yamashita, Y Adachi, Y Hosotani, Y Hosotani, Y Hosotani, Y Hosotani, Y Hosotani, Y Hosotani, Y Hosotani, Y Hosotani, Y Hosotani, Y Hosotani, Y Hosotani, Y Kawamura, Y Kawamura, Y Kawamura, Y Sakamura, Y Sakamura, Z Ahmed   +77 more
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Isolating Segments and Anti-Periodic Solutions

Monatshefte f?r Mathematik, 2002
Using the technique based on the notion of periodic isolating segments, the author establishes a sufficient condition for the existence of \(2^n\) geometrically distinct solutions of the two-point boundary value problem \[ \dot{x}=f(t,x), \qquad x(0)=g(x(nT)), \] where \(f\) is a smooth vector field on the manifold \(M\) and \(n\) is a positive integer.
openaire   +3 more sources