On the equality condition in Hölder's and Minkowski inequalities.
On the equality condition in Hölder's and Minkowski's inequalities. (Summary).
On the equivalence of Hille's and Robinson's functional equations
On the existence and uniqueness of convex solutions of a functional equation in the indeterminate case
On the existence and uniqueness of integrable solutions of functional equations in Banach space.
On the existence and uniqueness of periodic solutions for difference equations of second order
On the existence and uniqueness of solutions of some partial differential functional equations
On the existence and uniqueness of solutions to boundary value problems on time scales.
On the existence and uniqueness of the solution of a non-linear functional equation of r-th order
On the existence of a compactly supported -solution for two-dimensional two-scale dilation equations
Necessary and sufficient conditions for the existence of compactly supported -solutions for the two-dimensional two-scale dilation equations are given.
On the existence of a convex solution of the functional equation φ(x) = h(x,φ[f(x)])
On the existence of a Lipschitz solution of a functional equation
On the existence of continuous solutions of operator equations in Banach spaces
On the existence of positive solutions for certain difference equations and inequalities.
On the existence of positive solutions of second order neutral difference equations
The neutral delay difference equations of second order with positive and negative coefficients , n = 0,1,2,... studied sufficient condition existence positive solution equation obtained
On the existence of solutions of some second order nonlinear difference equations
We consider a second order nonlinear difference equation The necessary conditions under which there exists a solution of equation (E) which can be written in the form Here and are two linearly independent solutions of equation A special case of equation (E) is also considered.
On the exponential function and Pólya's proof
On the extension of exponential polynomials
Exponential polynomials are the building bricks of spectral synthesis. In some cases it happens that exponential polynomials should be extended from subgroups to whole groups. To achieve this aim we prove an extension theorem for exponential polynomials which is based on a classical theorem on the extension of homomorphisms.
On the extension of integrable solutions of a functional equation of n-th order
On the fine spectrum of the generalized difference operator over the sequence spaces and .