The theory of ill-posed problems originated in an unusual way. As a rule, a new concept is a
subject in which its creator takes a keen interest. The concept of ill-posed problems was …

The book is devoted to the foundations of the theory of boundary-value problems for various
classes of systems of differential-operator equations whose linear part is represented by …

On approximate solution of periodic boundary-value problems with delay by the least-squares
method in the critical case × Close The Infona portal uses cookies, ie strings of text saved by …

We establish necessary and sufficient conditions for the existence of solutions of a linear
periodic matrix boundary-value problem for a system of differential equations with …

We consider boundary-value problems for integral equations with degenerate kernel. Using
a pseudoinverse operator, we establish conditions for the existence of a unique solution of …

In the mathematical description of the evolution of real processes subject to short-time
perturbations it is often convenient to neglect the duration of the perturbations and assume …

Bibliography Page 1 Bibliography [1] NI Akhiezer and IM Glazman, Theory of Operators in
Hilbert Spaces, Part 1, Vyshcha Shkola, Kharkov (1977) (in Russian). [2] AA Andronov, AA Vitt …

Formulas are obtained for the construction of the generalized inverse operator, resolving a
linear Noetherian boundary value problem in a Banach space. The first of them is based on …