Volume no :33, Issue no: 1, May

A REMARK ON THE CONTINUANTS OF TRANSCENDENTAL NUMBERS IN CONTINUED FRACTION EXPANSION

Author's: Luming Shen and Xinqiang Li
Pages: [37] - [43]
Received Date: April 19, 2015
Submitted by:
DOI: http://dx.doi.org/10.18642/jmsaa_7100121491

Abstract

For any irrational let be n-th continuant of in its continued fraction expansion. Davenport and Roth showed that if satisfies



for all then must be transcendental. We call a set A purely transcendental set, if all the elements in A are transcendental. In this note, we intend to explain that if a purely transcendental set is determined merely by the properties of the individual continuants, besides algebraic numbers, most transcendental numbers are excluded from this set. Namely, let be a positive function defined on and set



If is a purely transcendental set, then the set is of Hausdorff dimension at most one-half.

Keywords

transcendental numbers, continued fractions, Hausdorff dimension.