Let be a flag kernel on a homogeneous nilpotent Lie group . We prove that operators of the form form an algebra under composition, and that such operators are bounded on for .
Cite this article
Alexander Nagel, Fulvio Ricci, Elias M. Stein, Stephen Wainger, Singular integrals with flag kernels on homogeneous groups, I. Rev. Mat. Iberoam. 28 (2012), no. 3, pp. 631–722DOI 10.4171/RMI/688