1. On Analytical Families of Matrices Generating Bounded Semigroups

   • P. A. Bakhvalov
   • M. D. Surnachev

   OriginalPaper 10 June 2021 Pages: 1 - 12

2. On Optimal Approximation of Geophysical Fields

   • I. V. Boikov
   • V. A. Ryazantsev

   OriginalPaper 10 June 2021 Pages: 13 - 29

3. Existence Results for Second-Order Nonlinear Differential Inclusion with Nonlocal Boundary Conditions

   • N. Bouteraa
   • S. Benaicha

   OriginalPaper 10 June 2021 Pages: 30 - 39

4. Semilocal Convergence of Modified Chebyshev–Halley Method for Nonlinear Operators in Case of Unbounded Third Derivative

   • N. Gupta
   • J. P. Jaiswal

   OriginalPaper 10 June 2021 Pages: 40 - 54

5. A Priori Error Estimates and Superconvergence of P₀²–P₁ Mixed Finite Element Methods for Elliptic Boundary Control Problems

   • Ch. Xu

   OriginalPaper 10 June 2021 Pages: 55 - 68

6. Adaptive Grids and High-Order Schemes for Solving Singular Perturbation Problems

   • V. D. Liseikin
   • V. I. Paasonen

   OriginalPaper 10 June 2021 Pages: 69 - 82

   

7. Reconstruction of Ocean Depths from Recorded Tsunami Arrival Times

   • An. G. Marchuk

   OriginalPaper 10 June 2021 Pages: 83 - 89

   

8. Numerical Solution of Generalized Burgers–Huxley Equation by Lie–Trotter Splitting Method

   • Y. Çiçek
   • S. Korkut

   OriginalPaper 10 June 2021 Pages: 90 - 102