%0 Journal Article %T Base point free theorems--saturation, b-divisors, and canonical bundle formula-- %A Osamu Fujino %J Mathematics %D 2005 %I arXiv %X We reformulate base point free theorems. Our formulation is flexible and has some important applications. One of the main purposes of this paper is to prove a generalization of the base point free theorem in Fukuda's paper: On numerically effective log canonical divisors. %U http://arxiv.org/abs/math/0508554v3