FISCHER DECOMPOSITION FOR DIFFERENCE DIRAC OPERATORS

Faustino, Nelson

We establish the basis of a discrete function theory starting with a Fischer decomposition for difference Dirac operators. Discrete versions of homogeneous polynomials, Euler and Gamma operators are obtained. As a consequence we obtain a Fischer decomposition for the discrete Laplacian. For the sake of simplicity we consider in the first part only Dirac operators which contain only forward or backward finite differences. Of course, these Dirac operators do not factorize the classic discrete Laplacian. Therefore, we will consider a different definition of a difference Dirac operator in the quaternionic case which do factorizes the discrete Laplacian.

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Faustino, Nelson: FISCHER DECOMPOSITION FOR DIFFERENCE DIRAC OPERATORS. 2006.

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