Results 21 to 30 of about 6,050,140 (310)
Periodic Algebras Generated by Groups [PDF]
Algebra Colloquium, 2015 We consider algebras with basis numerated by elements of a group G. We fix a function f from G × G to a ground field and give a multiplication of the algebra which depends on f. We study the basic properties of such algebras. In particular, we find a condition on f under which the corresponding algebra is a Leibniz algebra.
Albeverio, S. +2 more
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Alzheimer’s Research & Therapy, 2023 Background Alzheimer’s dementia (AD) is associated with electroencephalography (EEG) abnormalities including in the power ratio of beta to theta frequencies.
Hamed Azami +14 more
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PERIODIC CONFIGURATIONS OF SUBSHIFTS ON GROUPS [PDF]
International Journal of Algebra and Computation, 2009 We study the density of periodic configurations for shift spaces defined on (the Cayley graph of) a finitely generated group. We prove that in the case of a full shift on a residually finite group and in that of a group shift space on an abelian group, the periodic configurations are dense.
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Frequent periodic leg movement during sleep is an unrecognized risk factor for progression of atrial fibrillation. [PDF]
PLoS ONE, 2013 Sleep apnea has been recognized as a factor predisposing to atrial fibrillation recurrence and progression. The effect of other sleep-disturbing conditions on atrial fibrillation progression is not known.
Mahek Mirza +9 more
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Periodic solutions of second order Hamiltonian systems with nonlinearity of general linear growth
Electronic Journal of Qualitative Theory of Differential Equations, 2021 In this paper we consider a class of second order Hamiltonian system with the nonlinearity of linear growth. Compared with the existing results, we do not assume an asymptotic of the nonlinearity at infinity to exist. Moreover, we allow the system to be
Guanggang Liu
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Almost periodic functions, constructively [PDF]
Logical Methods in Computer Science, 2005 The almost periodic functions form a natural example of a non-separable normed space. As such, it has been a challenge for constructive mathematicians to find a natural treatment of them.
Bas Spitters
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Locally periodic unfolding method and two-scale convergence on surfaces of locally periodic microstructures [PDF]
, 2015 In this paper we generalize the periodic unfolding method and the notion of two-scale convergence on surfaces of periodic microstructures to locally-periodic situations.
Ptashnyk, Mariya +2 more
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The p-period of an infinite group [PDF]
Publicacions Matemàtiques, 1992 A group \(\Gamma\) has virtual cohomological dimension \(\operatorname{vcd}n\) if \(\Gamma\) has a subgroup of finite index which has cohomological dimension \(n\). For such groups the Farrell cohomology \(\widehat{H}^ i(\Gamma,-)\) is defined which has formal properties analogous to those of the Tate cohomology for finite groups (in which case \(n=0\))
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On solving discrete-time periodic Riccati equations [PDF]
, 2005 Two numerically reliable algorithms to compute the periodic nonnegative definite stabilizing solution ofdiscrete-time periodic Riccati equations are proposed.
A. Varga, Varga, Andras
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Limit periodic linear difference systems with coefficient matrices from commutative groups
Electronic Journal of Qualitative Theory of Differential Equations, 2014 In this paper, limit periodic and almost periodic homogeneous linear difference systems are studied. The coefficient matrices of the considered systems belong to a given commutative group.
Petr Hasil, Michal Veselý
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