We prove the Tits alternative for an almost coherent $PD(3)$ group which is not virtually properly locally cyclic. In particular, we show that an almost coherent $PD(3)$ group which cannot be generated by less than four elements always contains a rank 2 free group.

翻译：我们为几乎一致的美元(3)($PD)集团证明Tits的替代方案,这个集团几乎不是本地的自行车。 特别是,我们证明,一个几乎一致的美元(3)($PD)集团,不能由不到四个元素产生,但总有一个等级为2级的自由集团。