632 名前:tine approximation and has motivated many recent breakthrough developments such as the work of Einsiedler, Katok and Lindenstrauss [5] that contributed to Lindenstrauss' Fields Medal in 2010. The conjecture is well known for its strong links with dynamical systems and ergodic theory (indeed, the measure rigidity conjecture of Margulis [7] regarding the dynamics on SL3(R)=SL3(Z) implies Littlewood's Conjecture) and is currently a part of a major research trend world-wide. It has been in the spotlight at many recent major workshops and conferences including the 2010 ICM in Hyderabad. (引用終り) []