For any choice of m (not necessarily different) indices i_{1}, ... , i_{m} between 1 and d, define the mpoint function as follows:
The mpoint functions are a step towards the ultimate aim of our calculation. They enter at this moment because they can be calculated by repeated differentiation of Z_{b}
For example, note that
So the 1point function <v^{i}> is given by
Similarly the mpoint function is given by

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