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- Path: sparky!uunet!ogicse!uwm.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!west
- From: west@symcom.math.uiuc.edu (Douglas West)
- Newsgroups: comp.theory
- Subject: Re: Round robin problem
- Message-ID: <BtB35o.J5@news.cso.uiuc.edu>
- Date: 20 Aug 92 23:41:47 GMT
- Article-I.D.: news.BtB35o.J5
- References: <1992Aug20.170241.22798@src.umd.edu>
- Sender: usenet@news.cso.uiuc.edu (Net Noise owner)
- Organization: University of Illinois at Urbana
- Lines: 13
-
- clin@eng.umd.edu (Charles Lin) writes:
- > 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:
- > each vertex has at least one edge with each of the n - 1 colors
-
- This is the problem of showing that K_{2n} is 1-factorable.
- It is exercise 5.1.5a and exercise 6.2.1 in the graph theory book of
- Bondy and Murty. The standard construction is in the back of the book.
- Put one vertex at the center of a ring of 2n-1 others. Each matching
- consists of one radius and the pairs inducing chords perpendicular to it.
- -Doug West
-