Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.


Math Forum
»
Discussions
»
sci.math.*
»
sci.math
Notice: We are no longer accepting new posts, but the forums will continue to be readable.
Topic:
Connected and Locally Connected
Replies:
4
Last Post:
May 20, 2014 11:32 PM




Re: Connected and Locally Connected
Posted:
May 20, 2014 2:24 AM


Am 20.05.2014 06:50, schrieb William Elliot: > On Mon, 19 May 2014, Roland Franzius wrote: >> Am 19.05.2014 10:46, schrieb William Elliot: > >>> A space S is a Peano space when S is compact, connected, >>> locally connected and metrizable. Peano spaces are path, >>> in fact, arc connected. Is there a connected, locally >>> connected and metrizable space that's not path connected? >> >> Oh I see, you really want to discuss with the Mückenheim corona something >> like >> >> In this paper we prove that if a semilocally 1connected Peano space X >> admits a positively expansive open map ?, then X is homeomorphic to an >> infranilmanifold and ? is topologically conjugate to an expanding >> infranilendomorphism? > > Is that an example, a counter example or a speculation?a >
Since the encyclopedia of mathematics does not have as a lemma Peano spaces, I tried a scholar.google search for "peano spaces", the term that was more significant than the rather broad terms "locally" and "connected/pathconnected", that bring only those standard exercises from topology lecture notes like "topologist's comb" and "topologist's sine".
That cited abstract is indeed from paper and reminded me of those happy times when Bourbaki topologists were paid by the NATO research founds and created new categorial definitions by tons per year.
The article is
Positively expansive open maps of Peano spaces K Hiraide  Topology and its Applications, 1990  Elsevier
but I don't read such stuff, always remembering the warning from Reed/Simon:
Functional analysis (and operator algebra and group theory), the paradigma of quantum mathematical physics, is no frutful playground for topologists.

Roland Franzius



