Sequences and dynamical systems associated with canonical approximation   by rationals
  We study metrical properties of various subsequences associated to the sequence of rational approximants coming from the continued fraction of an irrational number. Our methods build upon Bosma, Jager and Wiedijk's proof of the Doblin-Lenstra conjecture as well as Jager's subsequent treatment of the sequence of approximation pairs. 
Andrew Haas
math.NT math.DS