Uniform Distribution Theory
Journal license

Journal

Uniform Distribution Theory


Volume
& Issue

Volume 12, Issue 2


Published
on

January 10, 2017


Pages

65-75


DOI

Article

Uncanny Subsequence Selections that Generate Normal Numbers

Check for updates


Authors

Joseph Vandehey Affiliation:
Department of Mathematics The Ohio State University, 231 West 18th Avenue Columbus, OH, 43210-1174 U.S.A.


Abstract

Given a real number 0.a 1 a 2 a 3 . . . that is normal to base b, we examine increasing sequences n i so that the number 0.a n1 a n2 a n3 . . . are normal to base b. Classically, it is known that if the n i form an arithmetic progression, then this will work. We give several more constructions including n i that are recursively defined based on the digits a i. Of particular interest, we show that if a number is normal to base b, then removing all the digits from its expansion which equal (b − 1) leaves a base-(b − 1) expansion that is normal to base (b − 1)


Keywords

normal numbers.


Citation

Vandehey, J. (2017). Uncanny subsequence selections that generate normal numbers. Uniform Distribution Theory, 12(2), 65–75. https://doi.org/10.1515/udt-2017-0015

Published by: Engineering Journals

Engineering Journals Logo