BMO Space and its relation with wavelet theory

Document Type: Research Articles


Department of Mathematics, Islamic Azad University, Farahan-Branch, Farahan, Iran.


The aim of this paper is a) if Σak2 < ∞ then Σak rk(x) is in BMO that
{rk(x)} is Rademacher system. b) P1k=1 ak!nk (x) 2 BMO; 2k  nk < 2k+1
that f!n(x)g is Walsh system. c) If jakj < 1
k then P1k=1 ak!k(x) 2 BMO.

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