Mm. Nessibi et al., RANGES AND INVERSION FORMULAS FOR SPHERICAL MEAN OPERATOR AND ITS DUAL, Journal of mathematical analysis and applications, 196(3), 1995, pp. 861-884
We consider the spherical mean operator R and its dual(t)R. We establi
sh some results from harmonic analysis for the generalized Fourier tra
nsform associated with the operator R. We deduce that the operators R
and (t)R are transmutation operators on some spaces of functions. Next
, we give inversion formulas for these operators and a Plancherel theo
rem for the operator (t)R. (C) 1995 Academic Press, Inc.