ZHOU Songping obtained his PhD at Dalhousie University in 1992 and had research positions at various universities in Europe, Asia and America during 1986-2008. He has led more than 10 national scientific programs and is currently a professor at the Institute of Mathematics of Zhejiang Sci-Tech University. His research focuses on structural analysis, including function approximation theory, classical Fourier analysis, functional analysis, and functional equations.
This book provides a comprehensive survey and investigation into the monotonicity conditions applied to the coefficients of trigonometric (or Fourier) series, exploring how these conditions influence various convergence properties, along with related topics on positivity and monotonicity....
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