From mboxrd@z Thu Jan  1 00:00:00 1970
Message-Id: <200201252256.RAA14748@math.psu.edu>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Getting started in Plan9 - help
In-Reply-To: Your message of "Fri, 25 Jan 2002 10:00:32 GMT."
             <87it9ruy4s.fsf@becket.becket.net>
From: Dan Cross <cross@math.psu.edu>
Date: Fri, 25 Jan 2002 17:56:04 -0500
Topicbox-Message-UUID: 4637e222-eaca-11e9-9e20-41e7f4b1d025

> In formal languages theory, "product" is usually concatenation,
> "exponentiation" is repeated concatenation.  (For example, one says
> that a DFA can scan A^n but not A^n B^n; one says that a context free
> grammar can parse A^n B^n but not A^n B^n C^n.)

Whoops, I should have realized that's what you were refering to.  My bad.

	- Dan C.