Computation and Approximation

The brief monograph under review collects some important results obtained by the authors and other researchers. Their contributions in this research field are notable. the monograph includes many mathematical proof techniques and ideas, and it may serve as one of the most useful reference books in this research field. It is very well written and organized, with historical background, clear and simple proofs, and both well-known and new mathematical techniques. Therefore it can be recommended . (Harun Karsli, Mathematical Reviews, February, 2023)