Characterization of dominated splittings for operator cocycles acting on Banach spaces
Abstract
Versions of the Oseledets multiplicative ergodic theorem for cocycles acting on infinitedimensional Banach spaces have been investigated since the pioneering work of Ruelle in 1982 and are a topic of continuing research interest. For a cocycle to induce a continuous splitting in which the growth in one subbundle exponentially dominates the growth in another requires additional assumptions; a necessary and sufficient condition for the existence of such a dominated splitting was recently given by J. Bochi and N. Gourmelon for invertible finitedimensional cocycles in discrete time. We extend this result to cocycles of injective bounded linear maps acting on Banach spaces (in both discrete and continuous time) using an essentially geometric approach based on a notion of approximate singular value decomposition in Banach spaces. Our method is constructive, and in the finitedimensional case yields explicit growth estimates on the dominated splitting which may be of independent interest.
 Publication:

arXiv eprints
 Pub Date:
 December 2015
 arXiv:
 arXiv:1512.07602
 Bibcode:
 2015arXiv151207602B
 Keywords:

 Mathematics  Dynamical Systems;
 37D30;
 37H15 (Primary);
 46B20 (Secondary)
 EPrint:
 32 pages