Descriptions of the Characteristic Sequence of an Irrational
- 1 March 1993
- journal article
- Published by Canadian Mathematical Society in Canadian Mathematical Bulletin
- Vol. 36 (1), 15-21
- https://doi.org/10.4153/cmb-1993-003-6
Abstract
Let α be a positive irrational real number. (Without loss of generality assume 0 < α < 1.) The characteristic sequence of α isf(α) =f1f2 ···, where fn = [(n + 1)α] - [nα].We make some observations on the various descriptions of the characteristic sequence of α which have appeared in the literature. We then refine one of these descriptions in order to obtain a very simple derivation of an arithmetic expression for [nα] which appears in A. S. Fraenkel, J. Levitt, and M. Shimshoni [17]. Some concluding remarks give conditions on n which are equivalent to fn = 1.Keywords
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