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


A conjugated version of the countable dense homogeneity
Authors:Tadeusz Dobrowolski
Institution:Department of Mathematics, Pittsburg State University, Pittsburg, KS 66762, USA Faculty of Mathematics and Natural Sciences, College of Sciences, Cardinal Stefan Wyszyński University, Dewajtis 5, 01-815 Warszawa, Poland
Abstract:We are interested in finding a homeomorphism h of a space X with h−1Φh(A)=B for a given bijection Φ of X and every pair of countable dense subsets A and B of X. For a separable Banach space X, such a homeomorphism h always exists provided the fixed-point set of Φ has the empty interior. Moreover, h can be chosen to be real-analytic. As a consequence, there exists a real analytic flow that sends A onto B after time t=1. Actually, for X=Rn, any bounded real-analytic vector field can be approximated by a real-analytic vector field whose induced flow sends A onto B after time t=1. Topological and Cp smooth counterparts of these results are also obtained.
Keywords:57N17  57N20  46A55  52A07
本文献已被 ScienceDirect 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