Science in China Series A: Mathematics

, Volume 42, Issue 12, pp 1233–1245

A class of singular integrals on then-complex unit sphere


  • Michael Cowling
    • Department of Pure MathematicsUniversity of New South Walse
  • Tao Qian
    • School of Mathematical and Computer SciencesUniversity of New England Armidale

DOI: 10.1007/BF02876023

Cite this article as:
Cowling, M. & Qian, T. Sci. China Ser. A-Math. (1999) 42: 1233. doi:10.1007/BF02876023


The operaton on the n-complex unit sphere under study have three forms: the singular integrals with holomorphic kernels, the bounded and holomorphic Fourier multipliers, and the Cauchy-Dunford bounded and holomorphic functional calculus of the radial Dirac operator\(D = \sum\nolimits_{k = 1}^n {z_k \frac{\partial }{{\partial _{z_k } }}} \). The equivalence between the three fom and the strong-type (p,p), 1 <p < ∞, and weak-type (1,1)-boundedness of the operators is proved. The results generalise the work of L. K. Hua, A. Korányli and S. Vagi, W. Rudin and S. Gong on the Cauchy-Szegö, kemel and the Cauchy singular integral operator.


singular integralFourier multiplierthe unit sphere in Cnlunetional calculus

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© Science in China Press 1999