aDepartment of Mathematics and LPMC, Nankai University, Tianjin 300071, China
bSchool of Science, Tianjin University, Tianjin 300072, China
Abstract:
This work is concerned with approximation of a signal from local averages. It improves a result of Butzer and Lei [P.L. Butzer, J. Lei, Approximation of signals using measured sampled values and error analysis, Commun. Appl. Anal. 4 (2000) 245–255].