On the Bergmann Kernel Function in Hyperholomorphic Analysis

Authors: Shapiro, M.V.1; Vasilevski, N.L.2

Source: Acta Applicandae Mathematicae, Volume 46, Number 1, January 1997 , pp. 1-27(27)

Publisher: Springer

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Abstract:

The hyperholomorphic Bergmann kernel function _\psi{\cal B} for a domain \Omega is introduced as the special quaternionic “derivative” of the Green function for \Omega . It is shown that _\psi{\cal B} is hyperholomorphic, Hermitian symmetric and reproduces hyperholomorphic functions.

We obtain an integral representation of _\psi{\cal B} as a sum of two integrals. One of them gives a smooth function, and the other describes the behaviour of _\psi{\cal B} near a boundary. To investigate the hyperholomorphic Bergmann function for some fixed class of hyperholomorphic functions we have to use not only the properties of just this class but also those of some other classes. The second fact is completely unpredictable from the complex analysis point of view.

The connection between the hyperholomorphic Bergmann projector (the integral operator with the kernel _\psi{\cal B}) and some classical multidimensional singular integral operators is established.

Document Type: Regular Paper

Affiliations: 1: Departamento de Matemáticas, ESFM del I.P.N., México-City, México 2: Departamento de Matemáticas, CINVESTAV del I.P.N., México-City, México

Publication date: January 1, 1997

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