摘要
证明了弱遗传闭包保持集族是CF*集族.
This paper shows that weakly hereditarily closure -preserving families is CF^* -families.
出处
《宁德师专学报(自然科学版)》
2008年第3期234-235,255,共3页
Journal of Ningde Teachers College(Natural Science)
关键词
CF*集族
CF集族
弱遗传闭包保持集族
CF^* - families
CF - families
weakly hereditarily closure - preserving families