MathGroup Archive: February 2010 [00807]

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LogicalExpand for De Morgan's laws takes long t

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Subject: [mg107805] [mg107805] LogicalExpand for De Morgan's laws takes long t
From: Eirik Larsen Følstad <eirik.folstad at q2s.ntnu.no>
Date: Sat, 27 Feb 2010 03:11:53 -0500 (EST)

Hi,

I'm using Mathematica 6.0 on a Mac (2.5GHz Intel Core 2 Duo with 4GB 
memory)  with Snow Leopard 10.6.2.

I have a relatively long boolean expression that I will apply the DeMorgan's law, i.e LogicalExpand[! expr]. This takes some minutes.

Is there any possible solutions to "speed up" the computation?
Do you know if the Mathematica 7 will speed up this computation by usage 
of the 64 bit possibility within Snow Leopard?


Best regards,
Eirik Larsen F=F8lstad

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