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A discrete Bochner-Martinelli formula
In the even dimensional case the discrete Dirac equation may be reduced to the so-called discrete isotonic Dirac system in which suitable Dirac operators appear from both sides in half the dimension. This is an appropriated framework for the development of a discrete Martinelli-Bochner formula for discrete holomorphic functions on the simplest of all graphs, the rectangular Z(m) one. Two lower-dimensional cases are considered explicitly to illustrate the closed analogy with the theory of continuous variables and the developed discrete scheme
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