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Uniformly continuous 1-1 functions on ordered fields not mapping interior to interior
- Source :
- Iranian Journal of Numerical Analysis and Optimization, Vol 1, Iss 1 (2008)
- Publication Year :
- 2008
- Publisher :
- Ferdowsi University of Mashhad, 2008.
-
Abstract
- In an earlier work we showed that for ordered fields F not isomorphic to the reals R, there are continuous 1-1 unctions on [0, 1]F which map some interior point to a boundary point of the image (and so are not open). Here we show that over closed bounded intervals in the rationals Q as well as in all non-Archimedean ordered fields of countable cofinality, there are uniformly continuous 1-1 functions not mapping interior to interior. In particular, the minimal non-Archimedean ordered field Q(x), as well as ordered Laurent series fields with coefficients in an ordered field accommodate such pathological functions.
Details
- Language :
- English
- ISSN :
- 24236977 and 24236969
- Volume :
- 1
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Iranian Journal of Numerical Analysis and Optimization
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.fe60d925736b4022877a17d2d20015af
- Document Type :
- article
- Full Text :
- https://doi.org/10.22067/ijnao.v1i1.620