该期刊是一本国际数学期刊，致力于近似和扩展以及计算，功能理论，功能分析，插值空间和算子插值，数值分析，函数空间，特殊函数和应用的相关研究。
This journal is an international mathematics journal dedicated to Approximations and Expansions and related research in computation, function theory, functional analysis, interpolation spaces and interpolation of operators, numerical analysis, space of functions, special functions, and applications.