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Abstract
The powers of the ordinary differential operator can be expanded in terms of the Cauchy-Euler differential operator and for the opposite case. The expansions involve the Stirling numbers of first and second kind as is well known. Two relations between the Stirling numbers of first and second kind will find their proof in this work, generated by the two expansions. A third relation is obtained by algebraic manipulation from the two known recursion relations.
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References
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