J Austral Math Soc Ser A 53 pp78--91, 1992.
(Received 8 August 1990)
A rational number is called a best approximant of the irrational number x if it lies closer to x than all rational numbers with a smaller denominator. Metrical properties of these approximants are studied. The main tool is the two-dimensional ergodic system, underlying the continued fraction expansion.
1991 AMS Subject Classification: 11J70, 11K50
Last Modified: Mon Feb 3 9:46:12 2003