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From: banks@iowasp.physics.uiowa.edu
Subject: BNF DEFINITION - help
Message-ID: <1994Sep5.221314@iowasp.physics.uiowa.edu>
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Organization: Department of Physics and Astronomy, University of Iowa
Date: Tue, 6 Sep 1994 03:13:14 GMT

I recently had a question asked about BNF definitions for a Programming
Languages Course.  The question is as follows:

	Using character set C={a,b} write a BNF definition for the language
consisting of all strings with odd length whose first and middle characters are
the same. 

If anyone can help it would be greatly appreciated.
e-mail: banks@iowasp.physics.uiowa.edu
