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Combinatoric interpretation of a formula for the ๐th derivative of a function of a function
where JJ ( ^ is taken for a system (s) of positive integral solutions ir, kr of the equations ]>^,i. = &, ^rkrir = n and ^T,8 is taken for all such systems. The factor Aks is equal to w![JJ,ir!(&r!)* ]~. From a recent result of H. S. Wallf we โฆ