
doi: 10.1007/bf02981679
Summary: Estimates of the growth order of rectangular partial sums of double orthogonal series are obtained. The fact that these estimates cannot be improved on the set of all double orthogonal systems is established.
partial sums, estimates, growth order, General harmonic expansions, frames, double orthogonal series, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis
partial sums, estimates, growth order, General harmonic expansions, frames, double orthogonal series, Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis
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