home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!dtix!darwin.sura.net!mojo.eng.umd.edu!disney.src.umd.edu!eng.umd.edu!clin
- From: clin@eng.umd.edu (Charles Lin)
- Newsgroups: comp.theory
- Subject: Round robin problem
- Message-ID: <1992Aug20.170241.22798@src.umd.edu>
- Date: 20 Aug 92 17:02:41 GMT
- Sender: news@src.umd.edu (C-News)
- Reply-To: clin@eng.umd.edu (Charles C. Lin)
- Organization: College of Engineering, Maryversity of Uniland, College Park
- Lines: 34
-
-
- Sorry, if this is the wrong place to post.
-
- Anyone know of a solution to the following problem:
-
- Given a complete graph of n nodes (vertices) where n is even,
- and given n - 1 colors, color the edges so that:
-
- (1) each vertex has at least one edge with each of the n - 1
- colors
-
- which by definition of a complete graph implies
-
- (2) each vertex has at most one edge with each of the n - 1
- colors.
-
- Basically all colors touch each vertex once and only once.
-
- This can also be restated as a round robin problem where
- there are n (n, even) players playing a tournament. Every
- day, one match is played. Every player plays every day, and
- must play every other player once. Hence, it takes n - 1
- days to play this.
-
- I have a solution to this, but I want to know if there
- are references to previous solutions of this problem and
- more importantly, the complexity.
-
- E-mail preferred, but I will read this newsgroup as
- well. Thanks in advance.
-
- --
- Charles Lin
- clin@eng.umd.edu
-