V.N.Bobochko. Differential turning point in the theory of singular perturbations. I

B.A.Kats and A.Yu.Pogodina. Boundary values of Cauchy type integral on a nonsmooth curve

M.Yu.Kokurin. Condition of source-representability and estimates for convergence rate of methods for regularization of linear equations in Banach space. II

N.A.Koreshkov. Casimir elements of $\mathbb Z$-forms of modular Lie algebras

N.Ye.Maryukova. Surfaces of constant curvature in a quasipseudo-Riemannian space of constant curvature and the Klein–Gordon equation

S.N.Tronin. Operads in the category of convexors. I

V.H.Fernandes A new class of divisors of semigroups of isotone mappings of finite chains

G.I.Shishkin. Optimal by order convergence rates of a piecewise uniform grid for singularly perturbed equations of convection-diffusion type

A.F.Galimyanov. Direct methods for solving integral equations with logarithmically weakened Cauchy kernels on open contours

L.D.Eskin. Integral equation describing orientation phase transitions in Parsons model for system of axially symmetric particles