摘要
给出了CoH-arrow群定理的逆定理,并且定义了H-arrow群,得到与CoH-arrow群对偶的定理.同时证明了若CoH-arrow同伦类有分别由CoH-arrow群乘法与H-arrow群乘法给出的两个群乘法,则这两个乘法相同且是可交换的.
The converse theorem of the Coil - arrow group theorem is given, and the con- cept of H - arrow group is defined. Then a theorem dual with that of the Coil - arrow group is obtained. Meanwhile, it is proved that the multiplications on the homotopy classes de- fined by Coil -arrow group and H -arrow group are the same and commutative.
出处
《华南师范大学学报(自然科学版)》
CAS
2006年第3期37-41,共5页
Journal of South China Normal University(Natural Science Edition)