%0 Journal Article %T On general (alpha,beta)-metrics with vanishing Douglas curvature %A Hongmei Zhu %J Mathematics %D 2015 %I arXiv %X In this paper, we study a class of Finsler metrics called general $(\alpha,\beta)$-metrics, which are defined by a Riemannian metric $\alpha$ and a $1$-form $\beta$. We find an equation which is necessary and sufficient condition for such Finsler metric to be a Douglas metric. By solving this equation, we obtain all of general $(\alpha,\beta)$-metrics with vanishing Douglas curvature under certain condition. Many new non-trivial examples are explicitly constructed. %U http://arxiv.org/abs/1505.07953v1