منابع مشابه
Somewhere Trivial Autohomeomorphisms
It is show to be consistent that there is a non-trivial autohomeomorphism of βN \ N while all such autohomeomorphisms are trivial on some open set. The model used is one due to Velickovic in which, coincidentally, Martin’s Axiom also holds.
متن کاملA nowhere convergent series of functions converging somewhere after every non-trivial change of signs
We construct a sequence of continuous functions (hn) on any given uncountable Polish space, such that ∑ hn is divergent everywhere, but for any sign sequence (εn) ∈ {−1,+1} N which contains infinitely many −1 and +1 the series ∑ εnhn is convergent at at least one point. We can even have hn → 0, and if we take our given Polish space to be any uncountable closed subset of R, we can require that e...
متن کاملHow Trivial Is Trivial
This question is, I feel, in the same kind of idiot category as how long is a piece of string? interviewed recently by a journalist planning to write an article about the women (like me) who conduct 'Auntie' columns in women's magazines, I was asked what proportion of the letters I received each week could be labelled trivial. Her eyebrows shot up when I said that in my view, no human problem w...
متن کاملSomebody, Sometime, Somewhere, Something
The success of the Web and of portable devices has made popular the idea that any information could be made available to anybody, anytime, and anywhere. Other paradigms are taking off within the ubiquitous computing solutions. This invited paper identifies some of these paradigms, focusing on the more innovative ones in terms of information services. In particular, broadcast-based and location-...
متن کاملIs Trivial Dynamics That Trivial?
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. Mathematical Association of America is collaborating with ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the London Mathematical Society
سال: 1994
ISSN: 0024-6107
DOI: 10.1112/jlms/49.3.569