home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.math
- Path: sparky!uunet!spool.mu.edu!agate!linus!linus.mitre.org!gauss!bs
- From: bs@gauss.mitre.org (Robert D. Silverman)
- Subject: Re: factorization in commutative rings
- Message-ID: <1993Jan5.142630.8930@linus.mitre.org>
- Sender: news@linus.mitre.org (NONUSER)
- Nntp-Posting-Host: gauss.mitre.org
- Organization: Research Computer Facility, MITRE Corporation, Bedford, MA
- References: <Jan.3.02.05.44.1993.24643@spade.rutgers.edu>
- Distribution: sci.math
- Date: Tue, 5 Jan 1993 14:26:30 GMT
- Lines: 26
-
- In article <Jan.3.02.05.44.1993.24643@spade.rutgers.edu> cadet@spade.rutgers.edu (Uniquely TiJean) writes:
-
- stuff deleted....
-
- :I am looking for counterexamples
- :B) D= princ. idl. domain doesn't imply D= euclidean domain.
- :
- : Well, I found in Hungerford ( Algebra )
- :
- : the following Z( (1+sqrt(-19)) / 2 )
- :
- :Question: How come? I have no cue as to why the above domain isn't euclidean.
- :
-
- A good reference for this is the chapter(s) in Hardy and Wright's Number Theory
- book that covers quadratic fields. They completely enumerate ALL of the
- imaginary quad. fields that are Euclidean.
- They have discriminant: -1, -2, -3, -7, -11.
-
- They also enumerate all of the real Euclidean quad. fields as well.
-
- --
- Bob Silverman
- These are my opinions and not MITRE's.
- Mitre Corporation, Bedford, MA 01730
- "You can lead a horse's ass to knowledge, but you can't make him think"
-