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- From: niall@nmsu.edu (Niall Graham)
- Subject: Re: a graph problem
- In-Reply-To: marcos@iota.ece.ucsb.edu's message of 5 Oct 92 21:58:28 GMT
- Message-ID: <NIALL.92Oct7193600@scheria.nmsu.edu>
- Sender: usenet@nmsu.edu
- Organization: Computing Research Lab
- References: <MARCOS.92Oct5145828@iota.ece.ucsb.edu>
- Distribution: sci.math
- Date: Thu, 8 Oct 1992 02:36:00 GMT
- Lines: 22
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- >What is the maximum number of nodes possible in a graph if all nodes have
- >degree at most d (in my case d=16) and the distance between any two nodes
- >is at most dist (i.m.c. dist=4) ??
-
- Naturally, this is called the degree-diameter problem.
- One of the papers in the second last issue of Discrete Applied Math.
- (spceial issue on networks) contains the latest table of values.
- I've heard a rumor that a few of these values have recently been
- surpassed though. The recent flurry of new values has been due to
- the use of Cayley coset graphs (& supercomputers) in the construction
- of new examples.
- I've mislaid my copy of the Table, so I can't
- give you the latest "bid" on entry (16,4).
-
- --
-
- Niall Graham "We live in an age that reads too much to be wise,
- Los Alamos and that thinks too much to be beautiful"
- Oscar Wilde
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