Abstract
A few years ago, Pellarin introduced a new sequence of functions each one being holomorphic in the unit disc and satisfying a Mahler-type functional equation. It will be shown that every single function is hypertranscendental. Moreover, a certain subsequence consisting of functions that are algebraically independent over \({\mathbb{C}(z)}\) is exhibited, and all other functions are \({\mathbb{Q}}\)-linear combinations of these modulo \({\mathbb{Q}[z]}\). Mahler’s method allows to deduce the corresponding arithmetic analogs from these analytic facts.
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Bundschuh, P., Väänänen, K. On certain Mahler functions. Acta Math. Hungar. 145, 150–158 (2015). https://doi.org/10.1007/s10474-014-0451-z
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DOI: https://doi.org/10.1007/s10474-014-0451-z
Keywords and phrases
- algebraic independence of functions
- hypertranscendence
- transcendence and algebraic independence of numbers