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math.CO2022
On the Self Shuffle Language
Pamela Fleischmann, Tero Harju, Lukas Haschke +2
The shuffle product \(u\shuffle v\) of two words \(u\) and \(v\) is the set of all words which can be obtained by interleaving \(u\) and \(v\). Motivated by the paper \emph{The Shu…
cs.DM2022
A recursive function coding number theoretic functions
Vesa Halava, Tero Harju, Teemu Pirttimäki
We show that there exists a fixed recursive function such that for all functions , there exists an injective function $c_h\colon \mathbb{N}\to…