A class of bounded pseudo-differential operators.
Pseudo-differential operators of order -M and type rho, delta(1), delta(2) are shown to be bounded in L(2) provided that 0 </= rho </= delta(1) < 1, 0 </= rho </= delta(2) < 1, and [Formula: see text].
Department of Mathematics, University of Chicago, Chicago, Ill. 60637.
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Calderón
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Vaillancourt