R.Boukoucha. On the non-existence of periodic orbits for a class of two-dimensional Kolmogorov systems

S.S.Volosivets and B.I.Golubov. Generalized absolute convergence of series of Fourier coefficients with respect to Haar type systems

N.N.Vorob’ev. On complete sublattices of formations of finite groups

F.N.Garif’yanov. On summary equation generated by a quadrangle

A.I.Zemlyanukhin and A.V.Bochkarev. Nonlinear summation of power series and exact solutions of evolution equations

S.P.Kuznetsov, V.V.Mochalov, and V.P.Chuev. On Riemann boundary-value problem for regular functions in Clifford algebras

E.A.Mazepa. Generalized solutions to boundary-value problems for quasilinear elliptic equations on noncompact Riemannian manifolds

Ya.A.Mikhailovskaya and A.N.Frolov. Computable linear orders and the Ershov hierarchy

E.Mukhamadiev and A.N.Naimov. Estimate of the order of growth of a class of entire functions on the real axis

O.A.Repin. Boundary-value problem with Saigo operators for mixed type equation with fractional derivative

V.I.Filippov. On generalization of Haar system and other function systems in spaces $E_\varphi$.

Brief communications

I.V.Konnov. Conditional gradient method without line-search