%0 Journal Article %T On indecomposable modules over the Virasoro algebra %A Yucai Su %J Physics %D 2000 %I arXiv %R 10.1007/BF02878973 %X It is proved that an indecomposable Harish-Chandra module over the Virasoro algebra must be (i) a uniformly bounded module, or (ii) a module in Category $\cal O$, or (iii) a module in Category ${\cal O}^-$, or (iv) a module which contains the trivial module as one of its composition factors. %U http://arxiv.org/abs/math/0012013v1