Title of article :
Uniformly continuous 1-1 functions on ordered fields not mapping interior to interior
Author/Authors :
Moniri، Mojtaba نويسنده , , S.Eivazloo، Jafar نويسنده استاد گروه رياضي دانشگاه تربيت مدرس، تهران - ايران ,
Issue Information :
دوفصلنامه با شماره پیاپی 0 سال 2008
Abstract :
In an earlier work we showed that for ordered fields F not isomorphic to
the reals R, there are continuous 1-1 functions 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 patho-
logical functions.
Journal title :
Iranian Journal of Numerical Analysis and Optimization
Journal title :
Iranian Journal of Numerical Analysis and Optimization