International conference "Theory of functions and its applications"
dedicated to the 120th anniversary of S. M. Nikol'skii
(July 1–5, 2025)

E-mail: Program Organizing Committee Ivanov Grigorii Evgen'evich (Chairman) Podlipskaya Ol'ga Gennad'evna (Vice-chairman) Sakbaev Vsevolod Zhanovich (Vice-chairman) Institutions Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region Lomonosov Moscow State University Steklov Mathematical Institute of Russian Academy of Sciences, Moscow Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, Moscow

International conference "Theory of functions and its applications" dedicated to the 120th anniversary of S. M. Nikol'skii, July 1–5, 2025
	July 1, 2025 (Tue)
	Plenary talks
1.	Opening July 1, 2025 10:00–10:05, Plenary talks
2.	About Sergei Mikhailovich Nikolsky July 1, 2025 10:05–10:20, Plenary talks
3.	Estimation of the entropy numbers of the Sobolev embedding on a Holder domain O. V. Besov July 1, 2025 10:20–10:50, Plenary talks
4.	On the systemic Poincare and Friedrichs inequalities Yu. A. Dubinskii July 1, 2025 10:55–11:35, Plenary talks
5.	Spaces of Generalized Bessel Potentials E. L. Shishkina July 1, 2025 17:00–17:40, Plenary talks
6.	Characterizations of absolutely continuous and Sobolev curves via Lipschitz compositions A. I. Tyulenev July 1, 2025 17:45–18:25, Plenary talks
	Section 1
7.	Divisors in Bernstein algebra N. F. Abuzyarova, D. V. Semenova July 1, 2025 11:50–12:30, Section 1
8.	Gelfand diameters of the intersection of finite-dimensional balls and Sobolev classes A. A. Vasil'eva July 1, 2025 12:35–13:15, Section 1
9.	On the measure of approximation of the Lipschitz class on an interval by some Riesz sums E. A. Rovba, P. G. Potseiko July 1, 2025 15:00–15:40, Section 1
10.	Estimates of the norms of the Hardy operator in Lorentz spaces E. N. Lomakina July 1, 2025 15:45–16:15, Section 1
11.	On the behavior of the poles of Hermite-Laurent approximations A. P. Starovoitov, I. V. Kruglikov July 1, 2025 16:20–16:40, Section 1
	Section 2
12.	Local entropy and complexity M. L. Blank July 1, 2025 11:50–12:30, Section 2
13.	On the non-wandering set of skew products on multidimensional cells L. S. Efremova July 1, 2025 12:35–13:15, Section 2
14.	Finding invariants and first integrals of projective structures and geodesic flows M. V. Demina July 1, 2025 13:20–13:50, Section 2
15.	Приближение функций кограницами и возвращение орбит A. V. Kochergin July 1, 2025 14:50–15:30, Section 2
16.	On the question of the existence of periodic points of continuous mappings on one-dimensional branched continua E. N. Makhrova July 1, 2025 15:35–16:05, Section 2
17.	On the question of bifurcation control in nonlinear hybrid systems S. V. Akmanova July 1, 2025 16:10–16:40, Section 2
	Section 3
18.	Construction of differential equations for the dynamics of systems with program links R. G. Mukharlyamov July 1, 2025 11:50–12:30, Section 3
19.	On the inverse problem of the calculus of variations for equations with non-potential operators S. A. Budochkina July 1, 2025 12:35–13:05, Section 3
20.	Integral invariants for infinite-dimensional Birkhoff systems Ph. T. Trinh July 1, 2025 13:10–13:30, Section 3
21.	On some spectral properties of the problem with discontinuous solutions E. E. Nekrylov July 1, 2025 14:50–15:10, Section 3
22.	On sufficient conditions for a weak extremum of a functional with the Stieltjes integral K. I. Kazakevich July 1, 2025 15:15–15:35, Section 3
23.	Mathematical model of free oscillations of a viscoelastic string with singularities T. V. Gridyaeva July 1, 2025 15:40–16:00, Section 3
24.	Application of the method of separation of variables to find a solution to a mixed problem with discontinuous solutions D. E. Marfin, A. K. Yutishev July 1, 2025 16:05–16:25, Section 3
25.	Positive invertibility of one mathematical model of the fifth order with derivatives with respect to measure E. A. Shaina July 1, 2025 16:30–16:50, Section 3
	July 2, 2025 (Wed)
	Plenary talks
26.	A Note on the Coupled System of Hyperbolic Differential Equations A. Ashyralyev July 2, 2025 10:00–10:40, Plenary talks
27.	Summation in the Mean in Trace Theory Z. Yu. Fazullin July 2, 2025 10:45–11:25, Plenary talks
28.	Semi-Global Uniform Asymptotics of Wave Fields with Cusp Type Caustics via the Pearcey Function and Its Derivatives S. Yu. Dobrokhotov, V. E. Nazaikinskii, A. A. Tolchennikov July 2, 2025 17:00–17:40, Plenary talks
29.	On the index of one class of nonlocal elliptic problems A. Yu. Savin July 2, 2025 17:45–18:25, Plenary talks
	Section 1
30.	The Modulus of Convexity of a Set and the J. Lindenstrauss Formula G. E. Ivanov July 2, 2025 11:50–12:20, Section 1
31.	Numerical calculation of the measure of non-convexity of alpha sets in the form of polygons and polyhedra A. A. Ershov July 2, 2025 12:25–12:55, Section 1
32.	Principle of indefinite equations in mathematics A. V. Pavlov July 2, 2025 13:00–13:20, Section 1
33.	A differential game of the same type with a terminal set in the form of a ring and a possible change in dynamics I. V. Izmestyev July 2, 2025 14:50–15:20, Section 1
34.	New theorems on finite increments A. S. Gasparyan July 2, 2025 15:25–15:55, Section 1
35.	On the growth of the hyperbolic derivative of bounded analytic functions Sh. A. Makhmutov July 2, 2025 16:00–16:30, Section 1
	Section 2
36.	Quasi-Classical Asymptotics for the Dirac Equation A. I. Alillueva July 2, 2025 11:50–12:30, Section 2
37.	Source identification elliptic problem with involution and nonlocal integral condition C. Ashyralyev July 2, 2025 12:35–13:05, Section 2
38.	ON LIAPUNOV AND EXPONENTIAL STABILITY OF ROSSBY-HAURWITZ WAVES IN INVARIANT SETS OF PERTURBATIONS Yu. N. Skiba July 2, 2025 13:10–13:40, Section 2
39.	Local bifurcations of solutions of a periodic boundary value problem for the Benney-Lin-Kawahara equation A. N. Kulikov, D. A. Kulikov July 2, 2025 15:00–15:30, Section 2
40.	Obtaining exact expressions for natural frequencies in modeling vibrations of mechanical systems with a moving boundary using the discrete Fourier transform V. L. Litvinov July 2, 2025 15:35–16:05, Section 2
41.	Solving the Burgers equation by the method of cutting off a power series A. E. Rassadin, M. A. Pisarev July 2, 2025 16:10–16:30, Section 2
	Section 3
42.	Existence of a propagation cone for a one-dimensional wave integro-differential operator with a fractional-exponential memory function N. A. Rautian July 2, 2025 11:50–12:30, Section 3
43.	The Cauchy Problem for a Parabolic Differential-Difference Equation with a Multidimensional Spatial Shift and a Summable Initial Function G. L. Rossovsky July 2, 2025 12:35–13:05, Section 3
44.	Model initial value problems for hyperbolic differential-difference equations N. V. Zaitseva July 2, 2025 13:10–13:40, Section 3
45.	On the functional-differential equation with orthotropic contractions in three-dimensional space A. L. Tasevich July 2, 2025 15:00–15:30, Section 3
46.	Composition Formula for Saigo q-fractional calculus operator for the q-analogue of the H-function V. K. Vyas July 2, 2025 15:35–15:55, Section 3
47.	On the factorization of a differential equation with "split" measures E. A. Kh. Al-Garaykholi July 2, 2025 16:00–16:20, Section 3
48.	The rate of convergence of the Galerkin method for approximate solution of a nonlinear parabolic equation with a time-periodic condition on the solution A. S. Bondarev July 2, 2025 16:25–16:45, Section 3
	July 3, 2025 (Thu)
	Plenary talks
49.	Operators in Kahler Spaces and Quantum Mechanics I. V. Volovich July 3, 2025 10:00–10:40, Plenary talks
50.	Analysis of quantum control landscapes A. N. Pechen July 3, 2025 10:45–11:25, Plenary talks
51.	Tridiagonal operators, continued fractions and dynamics of non-integrable quantum systems A. E. Teretenkov July 3, 2025 15:00–15:40, Plenary talks
52.	Neumann eigenvalues of non-linear elliptic operators A. D.-O. Ukhlov July 3, 2025 15:45–16:25, Plenary talks
53.	Blow-up problem for nonlocal parabolic equation with absorption under nonlocal Neumann boundary condition A. Gladkov July 3, 2025 16:30–17:10, Plenary talks
54.	Evening of memories July 3, 2025 18:00–20:00, Plenary talks
	Section 1
55.	Invertibility conditions for some operators in weight spaces M. V. Kabanko July 3, 2025 11:50–12:30, Section 1
56.	Density of derivatives of simplest fractions N. A. Dyuzhina July 3, 2025 12:35–13:05, Section 1
57.	Continuation operators of Sobolev spaces and Neumann spectral problem V. A. Pchelintsev July 3, 2025 13:10–13:40, Section 1
	Section 2
58.	General Relativity and Vlasov Equations: Cosmology and Lobachevsky Space V. V. Vedenyapin July 3, 2025 11:50–12:30, Section 2
59.	Physics and Learning Theory S. V. Kozyrev July 3, 2025 12:35–13:15, Section 2
60.	Quantum cellular automata, approaches, applications and beyond A. Arab July 3, 2025 13:20–13:40, Section 2
	Section 3
61.	Gradient Projection Method for Quantum Control O. V. Morzhin, A. N. Pechen July 3, 2025 11:50–12:30, Section 3
62.	Weak coupling limit for quantum systems with unbounded weakly commuting system operators I. Lopatin July 3, 2025 12:35–13:05, Section 3
63.	Optimization in open quantum systems with coherent and incoherent controls using the inGRAPE method V. N. Petruhanov July 3, 2025 13:10–13:40, Section 3
	July 4, 2025 (Fri)
	Plenary talks
64.	On equivariant boundary value problems and applications V. P. Burskii July 4, 2025 10:00–10:40, Plenary talks
65.	On elliptic equations and boundary value problems V. B. Vasilev (Vasilyev) July 4, 2025 10:45–11:25, Plenary talks
66.	Новая концепция меры в метрических пространствах и гипотеза Риман Ilgar Shikar Jabbarov (Dzhabbarov) July 4, 2025 16:15–16:55, Plenary talks
67.	On skew conjugacy of the linearized Euler operator E. Yu. Panov July 4, 2025 17:00–17:40, Plenary talks
68.	Improved resolvent approximations in averaging a high-order operator S. E. Pastukhova July 4, 2025 17:45–18:25, Plenary talks
	Section 1
69.	On description of associated spaces to some functional spaces D. V. Prokhorov July 4, 2025 11:50–12:30, Section 1
70.	Conditions for the Embedding of Calderon-Orlicz spaces D. Jamsranjav July 4, 2025 12:35–13:05, Section 1
71.	Estimates of the characteristic numbers of integral operators in functional spaces O. S. Derevyanko July 4, 2025 13:10–13:40, Section 1
72.	The renormalization process and its application to "bad" functions A. V. Ivanov July 4, 2025 15:00–15:30, Section 1
73.	Three-magnon systems in the Heisenberg model S. M. Tashpulatov July 4, 2025 15:35–15:55, Section 1
	Section 2
74.	Analytical solution of a boundary value problem for the Boltzmann-Maxwell system of equations S. I. Bezrodnykh, N. M. Gordeeva July 4, 2025 11:50–12:20, Section 2
75.	On the numerical-analytical method for singularly perturbed quasilinear parabolic equations S. V. Pikulin July 4, 2025 12:25–12:55, Section 2
76.	Solution of the spectral problem for the Laplace operator in domains with an incoming angle A. A. Ivannikova July 4, 2025 13:00–13:30, Section 2
77.	On the equivariant problem for the wave equation Yu. O. Belyaeva July 4, 2025 14:50–15:20, Section 2
78.	Calculation of zeros of a function containing a Cauchy type integral P. A. Gvozdev July 4, 2025 15:25–15:45, Section 2
	Section 3
79.	Fourier Transform and Renormalization Group Transformation in the Fermi Generalized Hierarchical Model M. D. Missarov, D. A. Khajrullin July 4, 2025 11:50–12:30, Section 3
80.	Random One-Parameter Semigroups: On the Equivalence of Semigroup and Resolvent Averaging R. Sh. Kalmetev July 4, 2025 12:35–13:05, Section 3
81.	Feynman-Katz Formulas for Schrdinger-Type Equations with Singular Potentials A. A. Loboda July 4, 2025 13:10–13:40, Section 3
82.	Continuous Dependence on a Parameter in the Problem of Optimal Transportation of Measures S. N. Popova July 4, 2025 14:50–15:20, Section 3
83.	On the comparison of convergence rates of classical ergodic averages for unitary actions of the group $\mathbb{R}^d$ I. V. Podvigin July 4, 2025 15:25–15:55, Section 3
	July 5, 2025 (Sat)
	Plenary talks
84.	TBA A. S. Holevo July 5, 2025 10:00–10:40, Plenary talks
85.	On the definition of operator-valued measures in an infinite-dimensional Hilbert space G. G. Amosov July 5, 2025 10:45–11:25, Plenary talks
86.	Schwarzian Integrals E. T. Shavgulidze July 5, 2025 17:00–17:40, Plenary talks
87.	Translation-invariant measures on Hilbert space and boundary value problems on infinite-dimensional domains V. Zh. Sakbaev July 5, 2025 17:45–18:25, Plenary talks
88.	Conference closing July 5, 2025 18:30–18:40, Plenary talks
	Section 1
89.	A function-theoretical study of logariphmic Hamiltonians of Volterra type lattices A. S. Osipov July 5, 2025 11:50–12:30, Section 1
90.	The Abel-Goncharov Problem in the Kernel of the Convolution Operator A. A. Nuyatov, V. V. Napalkov July 5, 2025 12:35–13:05, Section 1
91.	Solution of the Cauchy Problem in Domains with Corner Points on the Boundary P. N. Ivanshin July 5, 2025 13:10–13:40, Section 1
92.	Some Uniqueness Theorems in the Theory of Meromorphic Functions in the Half-Plane K. G. Malyutin, A. A. Naumova July 5, 2025 15:00–15:40, Section 1
93.	Markov's Diophantine Equation and Some of Its Generalizations A. O. Shishanin July 5, 2025 15:45–16:05, Section 1
	Section 2
94.	Some representations and integral estimates of vector fields A. V. Kalinin, A. A. Tyukhtina, A. Zolotnitsyn July 5, 2025 11:50–12:30, Section 2
95.	Nonclassical statements of problems in the theory of quasi-stationary electromagnetic processes A. V. Kalinin, A. A. Tyukhtina July 5, 2025 12:35–13:05, Section 2
96.	Partial differential equations of the third order and Airy functions V. M. Litovchenko July 5, 2025 13:10–13:40, Section 2
97.	Weak Sard property and uniqueness of generalized solutions of the continuity equation N. A. Gusev July 5, 2025 15:00–15:40, Section 2
98.	On the weak Sard property R. V. Dribas July 5, 2025 15:45–16:15, Section 2
99.	Estimates on the rate of convergence of Chernoff approximations to $C_0$-semigroups O. E. Galkin, I. D. Remizov July 5, 2025 16:20–16:50, Section 2
	Section 3
100.	Geometry of the noncommutative and nonassociative Orlicz spaces, and continuity of the Vainberg–Bregman projections N. N. Shamarov July 5, 2025 11:50–12:30, Section 3
101.	On universal properties of semigroup $C^*$-algebras R. N. Gumerov, E. V. Lipacheva July 5, 2025 12:35–13:15, Section 3
102.	Functors between $*$-polynomial relations K. A. Shishkin July 5, 2025 13:20–13:40, Section 3
103.	Asymptotic and Continuous Orlicz Cohomology of Locally Compact Groups Ya. A. Kopylov July 5, 2025 15:00–15:40, Section 3
104.	On spaces of measurable operators A. M. Bikchentaev July 5, 2025 15:45–16:25, Section 3