Best approximations of functions in the L\(_p\) metric by Haar and Walsh polynomials. (English) Zbl 0249.42015
MSC:
42C10 | Fourier series in special orthogonal functions (Legendre polynomials, Walsh functions, etc.) |
41A50 | Best approximation, Chebyshev systems |
41A10 | Approximation by polynomials |