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arXiv · 1301.0129

On Two Infinite Families of Pairing Bijections

Paul Tarau
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Abstract

We describe two general mechanisms for producing pairing bijections (bijective functions defined from N x N to N). The first mechanism, using n-adic valuations results in parameterized algorithms generating a countable family of distinct pairing bijections. The second mechanism, using characteristic functions of subsets of N provides 2^N distinct pairing bijections. Mechanisms to combine such pairing functions and their application to generate families of permutations of N are also described. The paper uses a small subset of the functional language Haskell to provide type checked executable specifications of all the functions defined in a literate programming style. The self-contained Haskell code extracted from the paper is available at http://logic.cse.unt.edu/tarau/research/2012/infpair.hs .

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Paul Tarau. 2013-01-01. On Two Infinite Families of Pairing Bijections. https://arxiv.org/abs/1301.0129

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