For an arbitrary real number with convergents p0 q0 , p1 q1 , p2 q2 , . . ., b(n+qi)c−bnc is equal to pi, and so is independent of n, except at a small specified number of values of n. For fixed n, this relation holds for all or for all except a finite number of values of i.
History
Citation
Bunder, M. W. (2006). On self matching in ⌊nα⌋. The Fibonacci Quarterly: a journal devoted to the study of integers with special properties, 44 290-296.