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- Path: sparky!uunet!ogicse!das-news.harvard.edu!husc-news.harvard.edu!ramanujan!elkies
- From: elkies@ramanujan.harvard.edu (Noam Elkies)
- Newsgroups: sci.math
- Subject: Re: Abel's proof of the insolubility of the quint
- Message-ID: <1992Sep3.122450.15337@husc3.harvard.edu>
- Date: 3 Sep 92 16:24:49 GMT
- Article-I.D.: husc3.1992Sep3.122450.15337
- References: <1992Sep2.204229.12330@news.cs.brandeis.edu> <MARTIN.92Sep2212731@lyra.cis.umassd.edu> <87834@netnews.upenn.edu>
- Organization: Harvard Math Department
- Lines: 14
- Nntp-Posting-Host: ramanujan.harvard.edu
-
- In article <87834@netnews.upenn.edu>
- weemba@sagi.wistar.upenn.edu (Matthew P Wiener) writes:
-
- >I spent my undergraduate days under the misconception that the proof of
- >the simplicity of A_5 was overly complicated and uninformative. Then I
- >came across the proof in Rotman: identify the conjugacy classes of A_5,
- >and notice the impossibility of any of them forming a partition for a
- >size that non-trivially divides 60.
-
- This nice proof is reasonably well-known, but can one get a proof
- of the simplicity of all A_n (n>4) from such ideas?
-
- --Noam D. Elkies (elkies@zariski.harvard.edu)
- Dept. of Matehmatics, Harvard University
-