Journal of Integer Sequences, Vol. 25 (2022), Article 22.4.7

The Arithmetic Partial Derivative


Brad Emmons and Xiao Xiao
Department of Mathematics
Utica University
Utica, NY 13502
USA

Abstract:

The arithmetic partial derivative (with respect to a prime p) is a function from the set of integers that sends p to 1 and satisfies the Leibniz rule. In this paper, we prove that the p-adic valuation of the sequence of higher order partial derivatives is eventually periodic. We also prove a criterion to determine when an integer has integral anti-partial derivatives. As an application, we show that there are infinitely many integers with exactly n integral anti-partial derivatives for every nonnegative integer n.


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(Concerned with sequences A003415.)


Received January 29 2022; revised version received June 1 2022. Published in Journal of Integer Sequences, June 4 2022.


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