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On the period interpretation for some special values of Thakur hypergeometric functions

Number Theory 2022-05-03 v1

Abstract

In 1995, Thakur invented and studied positive characteristic analogues of hypergeometric functions. In this paper, we interpret the special values of those functions as periods of a pre-tt-motive. As a consequence, we show their transcendence and linear independence results by using Chang's refined version of the Anderson-Brownawell-Papanikolas criterion. Furthermore, as by-products, we show some linear/algebraic independence results among the special values of Kochubei multiple polylogarithms according to our period interpretation and the corresponding refined criterion.

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Cite

@article{arxiv.2205.00649,
  title  = {On the period interpretation for some special values of Thakur hypergeometric functions},
  author = {Ryotaro Harada},
  journal= {arXiv preprint arXiv:2205.00649},
  year   = {2022}
}

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25 pages