Abstract
We review recent development of short uniform random walks, with a focus on its connection to (zeta) Mahler measures and modular parametrisation of the density functions. Furthermore, we extend available ‘probabilistic’ techniques to cover a variation of random walks and reduce some three-variable Mahler measures, which are conjectured to evaluate in terms of L-values of modular forms, to hypergeometric form.
To the memory of Jon Borwein, who convinced us that a short walk can be adventurous
The original version of this chapter was revised: The cross-citations in square brackets has now been updated. The correction to this chapter is available at https://doi.org/10.1007/978-3-030-36568-4_28
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12 May 2020
We review recent development of short uniform random walks, with a focus on its connection to (zeta) Mahler measures and modular parametrisation of the density functions. Furthermore, we extend available ‘probabilistic’ techniques to cover a variation of random walks and reduce some three-variable Mahler measures, which are conjectured to evaluate in terms of L-values of modular forms, to hypergeometric form.
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Acknowledgements
We thank H. Cohen for supplying us with the numerical observation (10) whose origin remains completely mysterious to us. We also thank the referee for their valuable feedback.
Both authors acknowledge support of the Max Planck Society during their stays at the Max Planck Institute for Mathematics (Bonn, Germany) in the years 2015–2017. The second author is partially supported by Laboratory of Mirror Symmetry NRU HSE, RF government grant, ag. no. 14.641.31.0001.
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Straub, A., Zudilin, W. (2020). Short Walk Adventures. In: Bailey, D., et al. From Analysis to Visualization. JBCC 2017. Springer Proceedings in Mathematics & Statistics, vol 313. Springer, Cham. https://doi.org/10.1007/978-3-030-36568-4_27
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