首页 | 本学科首页   官方微博 | 高级检索  
     检索      


A Little More on Coz-Unique Frames
Authors:Themba Dube
Institution:(1) Department of Mathematical Sciences, University of South Africa, P.O. Box 392, 0003 Unisa, South Africa
Abstract:Coz-unique frames were defined and characterized by Banaschewski and Gilmour (J Pure Appl Algebra 157:1–22, 2001). In this note we give further characterizations of these frames along the lines of characterizations of absolutely z-embedded spaces obtained by Blair and Hager (Math Z 136:41–52, 1974) on the one hand, and by Hager and Johnson (Canad J Math 20:389–393, 1968) on the other. We also extend to frames certain characterizations of z-embedded spaces; namely, we give a characterization of coz-onto frame homomorphisms in terms of normal covers.
Keywords:Frame  Frame quotient  Coz-unique  Coz-onto            P-quotient  Normal cover
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号