论文标题
自由群体的自由因素的综合体
The complex of free factors of a free group
论文作者
论文摘要
本文纠正了1998年在《牛津季刊》上发表的论文的原始版本中的证明中的错误。主要定理保持不变：在有限生成的自由等级$ n $中，部分有序的合适因素集的几何实现是同质的。
This paper corrects an error in a proof in the original version of the paper published in 1998 in the Oxford Quarterly. The main theorem remains the same: The geometric realization of the partially ordered set of proper free factors in a finitely generated free group of rank $n$ is homotopy equivalent to a wedge of spheres of dimension $n-2$.
