Vol. 67, No. 11, 2023

Russian Mathematics

Uniqueness of the Kernel Determination Problem in a Integro-Differential Parabolic Equation with Variable Coefficients

D. K. Durdiev and J. Z. Nuriddinov p. 1 abstract

A Modification of Visser’s Formal Logic and Its Connection with Solovay’s Modal Logic

Ya. I. Petrukhin p. 12 abstract

Curves Whose Arcs with a Fixed Startpoint Are Similar

I. V. Polikanova p. 22 abstract

Method and Algorithm for Calculating Isobaric and Nonisobaric Three-Dimensional Turbulent Jets of Reacting Gases

S. Khodzhiev p. 34 abstract

Compound Cubature Formulas on a Lattice

Kh. M. Shadimetov and N. Kh. Mamatova p. 49 abstract

Approximation of the Lebesgue Constant of the Fourier Operator by a Logarithmic-Fractional-Rational Function

I. A. Shakirov p. 64 abstract

Invariant Subspaces in Nonquasianalytic Spaces of Ω-Ultradifferentiable Functions on an Interval

N. F. Abuzyarova p. 75 abstract

Finite Element Modeling of Eigenvibrations of a Square Plate with an Attached Oscillator

D. M. Korosteleva and S. I. Solov’ev p. 80 abstract

The Riemann Problem in a Half-Plane for Generalized Analytic Functions with a Supersingular Point on the Contour of the Boundary Condition

P. L. Shabalin p. 85 abstract