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- Path: sparky!uunet!munnari.oz.au!manuel.anu.edu.au!newshost!werner
- From: werner@pell.anu.edu.au (Werner Nickel)
- Newsgroups: sci.math
- Subject: Re: A Question About Fundamental Group
- Date: 20 Nov 92 15:05:29
- Organization: Australian National University
- Lines: 17
- Message-ID: <WERNER.92Nov20150529@lamb.anu.edu.au>
- References: <amirishs.722059588@acf9>
- NNTP-Posting-Host: 150.203.15.67
- In-reply-to: amirishs@acf9.nyu.edu's message of 18 Nov 92 04:06:28 GMT
-
- In article amirishs@acf9.nyu.edu (shaahin amiri sharifi) writes:
-
- Consider a bunch of infinitely many (countable) circles with a
- point in common. The radii of these circles make a sequence like
- {1/n}. What is the fundamental group of this space? Any comments
- or referenc would be so helpful!
-
- The fundamental group of this topological space, known as the Hawaiian
- earing, is derived in the following paper:
-
- J.W. Morgan, I. Morrison:
- A van Kampen Theorem for Weak Joins
- Proc. London Math. Soc. (3), 53 (1986), 562-576
-
- Werner Nickel
- Mathematics Research Section
- Australian National University
-