Using this result we prove in this paper that every contractible polyhedron is an absolute retract.

借助于这一结果，本文证明了每一个可缩多面体均是个绝对收缩核。

youdao

Using this result we prove in this paper that every contractible polyhedron is an absolute retract.

借助于这一结果，本文证明了每一个可缩多面体均是个绝对收缩核。

youdao