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2020 • On continued fraction expansions of quadratic irrationals in positive characteristic

Authors: Frédéric Paulin, Uri Shapira

Abstract: Let $P$ be a prime polynomial in the variable $Y$ over a finite field and let $f$ be a quadratic irrational in the field of formal Laurant series in the variable $Y^{-1}$. We study the asymptotic properties of the degrees of the coefficients of the continued fraction expansion of quadratic irrationals such as $P^nf$ and prove results that are in sharp contrast to the analogue situation in zero characteristic.

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On continued fraction expansions of quadratic irrationals in positive characteristic

Frédéric Paulin, Uri Shapira

Groups, Geometry, and Dynamics · 2020

Combinatorics |

Open Access

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