About the Journal

Journal Info: 

  • Journal Title:  Approximation Theory and Special Functions
  • Abrivated Title: Approx. Theory Spec. Funct.
  • Initials: ATSF
  • Publisher: ATSF Publishing (see for details)
  • ISSN/e-ISSN: 3108-5083 (Online)
  • Page Charges: No page charges
  • Periods: Two issues per year.

The highlighted topics of the journal are as follows:

  • Approximation Theory: Classical approximation, statistical approximation, fuzzy approximation, approximation in the complex plane, best approximation, best constants in approximation theory, linear and nonlinear approximation, simultaneous approximation, multivariate approximation, neural networks, numerical approximation, rational approximation, splines, interpolation and quadrature processes, weighted approximation, asymptotic theory. 

  • Special Functions: Orthogonal polynomials, hypergeometric functions, generating functions, general orthogonal systems, umbral calculus, recurrence relations, matrix-valued polynomials, Fourier series, special orthogonal functions, special polynomials, computational aspects of special functions, special functions in mathematical pyhsics,... and their applications.

  • Summability Theory: Statistical convergence, regular summability methods, power series methods, sequence spaces, divergent series, Tauberian theorems, summation processes, matrix and integral methods for summability.

  • Applied Mathematics: ODEs, PDEs, integral equations, difference equations, mathematical modeling, dynamical systems, numerical analysis, oscillation, stability theory, control theory, financial mathematics, opitimization, probability and statistics, stochastic process, graph theory.

  • Analysis and Functions Theory: Harmonic analysis, functional analysis, geometric function theory, fuzzy analysis, operator theory, spectral theory, fixed point theory, fractional calculus, q-analysis, number theory, combinatorics, cryptography and coding theory, inequalities, time scales.