“…Similar estimates, sometimes with some other functions in place of constant multiples of %Q, appear in the theory of wavelet and atomic decompositions, tent spaces, weighted norm inequalities, interpolation by analytic and harmonic functions, Banach space geometry problems, operator theory, etc. (See [1], [2], [4], [7]-[ll], [14]- [19], [21].) Several special cases of (1.2) and (1.3), mostly for dω -dx, are known.…”