We give a survey of recent works concerning the mapping properties of joint harmonic projection operators, mapping the space of square integrable functions on complex land quaternionic spheres onto the eigenspaces of the Laplace-Beltrami operator and of a suitably defined subLaplacian. In particular, we discuss similarities and differences between the real, the complex and the quaternionic framework.
机构:
Hacettepe Univ, Fac Letters, Dept Turkic Languages & Literatures, Ankara, TurkeyHacettepe Univ, Fac Letters, Dept Turkic Languages & Literatures, Ankara, Turkey