Results 41 to 50 of about 1,064,326 (320)

n-Laplacians on Metric Graphs and Almost Periodic Functions: I

open access: yesAnnales de l'Institute Henri Poincare. Physique theorique, 2020
The spectra of n -Laplacian operators $$(-\Delta )^n$$ ( - Δ ) n on finite metric graphs are studied. An effective secular equation is derived and the spectral asymptotics are analysed, exploiting the fact that the secular function is close to a ...
P. Kurasov, J. Muller
semanticscholar   +1 more source

Almost Periodic Solutions for Some Convolution Equations

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
We use the theory of Fourier series for almost periodic functions to looking for complex-valued functions f which are almost periodic on R and satisfy the following ...
Corduneanu Silvia-Otilia
doaj   +1 more source

ON THE ALMOST PERIODIC AT INFINITY FUNCTIONS FROM HOMOGENEOUS SPACES

open access: yesПроблемы анализа, 2018
We consider homogeneous spaces of functions defined on the real axis (or semi-axis) with values in a complex Banach space. We study the new class of almost periodic at infinity functions from homogeneous spaces.
Baskakov A. G.   +2 more
doaj   +1 more source

Sampling Almost Periodic and Related Functions [PDF]

open access: yesConstructive Approximation, 2019
22 ...
Ferri, Stefano   +2 more
openaire   +3 more sources

Subharmonic Almost Periodic Functions

open access: yes, 2007
We prove that almost periodicity in the sense of distributions coincides with almost periodicity with respect to Stepanov's metric for the class of subharmonic functions in a horizontal strip. We also prove that Fourier coefficients of these functions are continuous functions in Im z.
Rakhnin, A.V., Favorov, S.Yu.
openaire   +4 more sources

On an nth-order infinitesimal generator and time-dependent operator differential equation with a strongly almost periodic solution

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
In a Banach space, if u is a Stepanov almost periodic solution of a certain nth-order infinitesimal generator and time-dependent operator differential equation with a Stepanov almost periodic forcing function, then u,u′,…,u (n−2) are all strongly almost ...
Aribindi Satyanarayan Rao
doaj   +1 more source

Weyl almost periodic solutions to abstract linear and semilinear equations with Weyl almost periodic coefficients [PDF]

open access: yesMathematical methods in the applied sciences, 2018
In this work, we study the existence and uniqueness of bounded Weyl almost periodic solution to the abstract differential equation u′(t)  =  Au(t) + f(t), t∈R , in a Banach space X , where A:DA⊂X→X is a linear operator (unbounded) that generates an ...
F. Bedouhene   +3 more
semanticscholar   +1 more source

Almost Periodic Solutions of C-well-posed Evolution Equations [PDF]

open access: yes, 2006
This paper is concerned with the existence and uniqueness of almost periodic mild solutions of evolution equations of the form u(t) = Au(t) + ƒ(t) where A is the generator of a holomorphic Csemigroup on a Banach space and ƒ is an almost periodic function.
Minh, Nguyen Van
core   +1 more source

Holomorphic Semi-almost Periodic Functions

open access: yesIntegral Equations and Operator Theory, 2010
We study the Banach algebras of bounded holomorphic functions on the unit disk whose boundary values, having, in a sense, the weakest possible discontinuities, belong to the algebra of semi-almost periodic functions on the unit circle. The latter algebra contains as a special case an algebra introduced by Sarason in connection with some problems in the
Brudnyi, Alexander, Kinzebulatov, Damir
openaire   +3 more sources

Mean sensitive, mean equicontinuous and almost periodic functions for dynamical systems

open access: yes, 2019
We show that an $R^d$-topological dynamical system equipped with an invariant ergodic measure has discrete spectrum if and only it is $\mu$-mean equicontinuous (proven for $Z^d$ before).
García-Ramos, Felipe, Marcus, Brian
core   +1 more source

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