In this paper, the notion of p-wavelet packets on the positive half-line R+ is introduced. A new method for constructing non-orthogonal wavelet packets related
In the present paper we consider quartic piecewise polynomial for approximation to the function f ∈ C 2 [0, 1]. A convex type condition has been imposed in the
We generalize several classical results on the integrability of trigonometric series and relations among the best approximation and the coefficients of trigonom