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ON GOOD APPROXIMATIONS AND THE BOWEN–SERIES EXPANSION

Part of: Other groups of matrices Diophantine approximation, transcendental number theory

Published online by Cambridge University Press:  25 January 2021

LUCA MARCHESE Open the ORCID record for LUCA MARCHESE [Opens in a new window]
LUCA MARCHESE*
Affiliation:
Dipartimento di Matematica, Università di Bologna, Piazza di Porta San Donato 5, 40126Bologna, Italy
*
e-mail: [email protected]
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Abstract

We consider the continued fraction expansion of real numbers under the action of a nonuniform lattice in $\text {PSL}(2,{\mathbb R})$ and prove metric relations between the convergents and a natural geometric notion of good approximations.

Keywords

continued fractionsFuchsian groups

MSC classification

Primary: 11J70: Continued fractions and generalizations
Secondary: 20H10: Fuchsian groups and their generalizations
Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 104 , Issue 1 , August 2021 , pp. 45 - 58
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Copyright
© 2021 Australian Mathematical Publishing Association Inc.

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