Ikhsanov Lev Nazarovich

Publications in Math-Net.Ru

1. Sharp estimate of approximation by the Szasz–Mirakjan operator in terms of the second modulus of continuity
   
   Algebra i Analiz, 37:4 (2025),  1–17
2. Paltanea type theorems on estimation by positive discrete functionals
   
   Zap. Nauchn. Sem. POMI, 527 (2023),  71–83
3. Exact estimates of approximation by abstract Kantorovich type operators in terms of the second modulus of continuity
   
   Zap. Nauchn. Sem. POMI, 491 (2020),  66–93
4. Estimates of approximation by Kantorovich type operators in terms of the second modulus of continuity
   
   Zap. Nauchn. Sem. POMI, 480 (2019),  122–147
5. Estimation of functions orthogonal to piecewise constant functions in terms of the second modulus of continuity
   
   Zap. Nauchn. Sem. POMI, 456 (2017),  96–106