On monotone solutions of some classes of difference equations.
On monotonic solutions of some functional equations [Book]
On multidimensional Ostrowski and Grüss type finite difference inequalities.
On Nathanson's functional equation.
On nonautonomous discrete dynamical systems driven by means.
On nonlinear boundary value problems for functional difference equations with -Laplacian.
On nonperturbative localization with quasi-periodic potential.
On non-point invertible transformations of difference and differential-difference equations.
On nonresonance problems of second-order difference systems.
On nonstrict means.
On operator valued solutions of d'Alembert's functional equation, II
On operator-valued cosine sequences on UMD spaces
A two-sided sequence with values in a complex unital Banach algebra is a cosine sequence if it satisfies for any n,m ∈ ℤ with c₀ equal to the unity of the algebra. A cosine sequence is bounded if . A (bounded) group decomposition for a cosine sequence is a representation of c as for every n ∈ ℤ, where b is an invertible element of the algebra (satisfying , respectively). It is known that every bounded cosine sequence possesses a universally defined group decomposition, the so-called...
On operator-valued solutions of d'Alembert's functional equation, I
On Opial-type inequalities in two varaiables.
On orthogonally additive mappings.
On orthogonally additive mappings, IV.
On orthogonally additive mappings. (Short Communication).
On oscillation and nonoscillation properties of Emden-Fowler difference equations
A characterization of oscillation and nonoscillation of the Emden-Fowler difference equation is given, jointly with some asymptotic properties. The problem of the coexistence of all possible types of nonoscillatory solutions is also considered and a comparison with recent analogous results, stated in the half-linear case, is made.
On oscillation of second order linear difference equations with deviated arguments.
On oscillatory first order neutral impulsive difference equations
We have established sufficient conditions for oscillation of a class of first order neutral impulsive difference equations with deviating arguments and fixed moments of impulsive effect.