Saturday, September 2  

15.00  15.10  Opening  
Chair: Irina Kmit  
15.10  16.10  Oleh Melnyk Convergence of iterative methods for phase retrieval and blind ptychography  
16.10  16.50  Coffee break  
Chair: Yurii Kolomoitsev  
16.50  17.20  Andrii Shidlich Direct and inverse approximation theorems in the BesicovitchMusielakOrlicz spaces of almost periodic functions  
17.20  17.50  Kateryna Pozharska Sampling recovery in the uniform norm  
17.50  18.20  Igor Sokolenko Approximation by Fourier sums and interpolation trigonometric polynomials in the classes of WeylNagy differentiable functions with high exponent of smoothness  
Sunday, September 3  
Chair: Oleh Melnyk  
09.00  10.00  Nadiia Derevianko Pronytype methods for recovery and approximation by exponential sums  
10.00  10.30  Vitalii Vasylyk Exponentially convergent method for a differential equation with fractional derivative and unbounded operator coefficient in Banach space  
10.30  11.00  Coffee break  
Chair: Ronny Bergmann  
11.00  11.30  Barbara Zwicknagl Variational models for pattern formation in helimagnetic compounds  
11.30  12.00  Kateryna Buryachenko Regularity problems for anisotropic porous media equations  
12.00  12.30  Illia Karabash Calkin reduction operators in boundary conditions for open optical cavities  
12.30  Lunch  
14.30  Walkingtour  
16.00  16.45  Coffee break  
Chair: Illia Karabash  
16.45  17.15  Volodymyr Dubovoy Schur functions as characteristic operator functions of unitary colligations (transfer functions of open systems)  
17.15  17.45  Tania Stepaniuk Upper and lower boundaries for Green, Riesz and logarithmic energies on projective spaces  
17.45  18.15  Evgeniy Petrov Fixed point theorems for mappings contracting perimeters of triangles and generalized Kannan type mappings  
18.15  19.00  Group leader meeting  
Monday, September 4  
Chair: Mariia Savchenko  
09.00  10.00  Ronny Bergman Nonsmooth, nonconvex optimization on Riemannian manifolds  
10.00  10.30  Christian Rieger RBF for Surface PDEs  
10.30  11.00  Coffee break  
Chair: Christian Rieger  
11.00  11.30  Frank Filbir MarcinkiewiczZygmund inequalities for scattered and random data on the $q$dimensional unit sphere  
11.30  12.00  Frederic Schoppert Edge detection with polynomial frames on the sphere  
12.00  12.30  Aleksandr Kholkin Interplay between spectral and oscillatory properties of differentialoperator equations of arbitrary even order  
12.30  Lunch  
Chair: Barbara Zwicknagl  
14.30  15.00  Mariia Serdiuk Pseudodifferential equations with regular singularity for radial functions of $p$adic argument  
15.00  15.30  Irina Kmit Hyperbolic operators with finite time propagation of singularities  
15.30  16.00  Viktor Tkachenko Smoothness of global bounded solutions to nonautonomous linear and quasilinear first order hyperbolic systems  
16.00  16.45  Coffee break  
Chair: Oleg Davydov  
16.45  17.15  Olesia Zavarzina Plasticity problem and related questions  
17.15  17.45  Olexandr Burylko Timereversible dynamics in a system of two coupled active rotators  
17.45  18.15  Discussion of future cooperation  
Tuesday, September 5  
Chair: Frank Filbir  
09.00  10.00  Oleg Davydov Meshless finite difference methods and overlap splines  
10.00  10.30  Yurii Kolomoitsev Spline representation and redundancies of onedimensional ReLU neural network model  
10.30  11.00  Coffee break  
Chair: Andrii Shidlich  
11.00  11.30  Nataliya Vasylyeva Multiterm fractional equations modeling oxygen delivery through capillaries to tissues  
11.30  12.00  Dmytro Sytnyk Exponentially convergent numerical method for abstract Cauchy problem with fractional derivative of Caputo type  
12.00  12.30  Hanna Veselovska Surrogate modelling using sparse random features  
12.30  Lunch  
Chair: Vitalii Vasylyk  
14.30  15.00  Ivan Kovalyov Twodimensional moment problem  
15.00  15.30  Thu Hien Nguyen The distribution of zeros of polynomials and entire functions  
15.30  16.00  Evgeniya Semenova On optimal recovering of high order derivatives of bivariate functions with noisy data  
16.00  16.45  Coffee break  
Chair: Nadiia Derevianko  
16.45  17.15  Olga Rovenska Exact constants in estimates of approximation of Lipschitz classes by Cesàro means  
17.15  17.45  Sergii Yanchenko Kolmogorov widths and entropy numbers of the classes of periodic functions of many variables with dominating mixed smoothness  
17.45  18.15  Serhii Stasyuk Best $m$trigonometric approximation, Gelfand numbers and optimal recovery  
Wednesday, September 6  
Chair: Thu Hien Nguyen  
09.00  10.00  Mariia Savchenko Harnack's inequality for solutions of elliptic equations with nonstandard growth under the nonlogarithmic Zhikov's condition  
10.00  10.30  Dirk Langemann Modeling coexisting populations  the power of illustration  
10.30  11.00  Coffee break  
Chair: Dirk Langemann  
11.00  11.30  Katja Tüting A model of measurement  examples, uncertainty and calibration  
11.30  12.00  Jürgen Prestin Fractional Fourier series for linear chirps  
 
 
