%0 Journal Article %T Drinfeld-Sokolov hierarchies of type A and fourth order Painleve systems %A Kenta Fuji %A Takao Suzuki %J Mathematics %D 2009 %I arXiv %X We study the Drinfeld-Sokolov hierarchies of type A_n^{(1)} associated with the regular conjugacy classes of W(A_n). A class of fourth order Painleve systems is derived from them by similarity reductions. %U http://arxiv.org/abs/0904.3434v1