On a boundary value problem of N. I. Ionkin typeDifferential Equations - Tập 49 - Trang 1233-1245 - 2013
N. B. Kerimov
We study the spectral properties of a second-order differential operator with
regular but not strongly regular boundary conditions. We show that the system of
root functions of this operator contains infinitely many associated functions.
We prove that a specially chosen system of root functions of this operator forms
a basis in the space L p (0, 1), 1 < p < ∞, which is unconditional for p = 2.... hiện toàn bộ
On invariants of discrete dynamical systemsDifferential Equations - Tập 46 - Trang 758-761 - 2010
V. Yu. Tyshchenko
We study the properties of invariants of discrete dynamical systems. The case in
which discrete dynamical systems admit a discrete symmetry is considered.