摘要
设J^+是下有界复形。证明了,若对任意零调复形C^+,[C^+,J^+]=0,则J^+必与某下有界内射复形同伦。由此我们得到了下有界内射复形的一个同伦刻画。
Let J' be a bounded below complex. In this paper we proved that if [ C,J] = 0 for any acyclic complex C , then /' is homotopic to some bounded below injective complex. From this result we obtained a homotopv characterization of bounded below injective complexes.
出处
《湖北大学学报（自然科学版）》
CAS
1993年第3期267-269,共3页
Journal of Hubei University：Natural Science
关键词
下有复形
复形
同伦
内射分解
Bounded below complexes Bounded below injective complexes Homotopy Homotopic additive groups
