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Problem with matching.

• To: mathgroup at smc.vnet.net
• Subject: [mg53907] Problem with matching.
• From: Josef Karthauser <joe at tao.org.uk>
• Date: Wed, 2 Feb 2005 18:10:51 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Can someone tell me why this doesn't match?

F[{x, 2, c}]F[{x, 1, f}] /. F[{___, a_, ___}]F[{___, a_, ___}] :> yes

I'm expecting 'yes' to be returned if any of the list arguments to F[]
contain the same value.  It doesn't match however; what am I doing
wrong?

Thanks,
Joe
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Josef Karthauser (joe at tao.org.uk)	       http://www.josef-k.net/
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Physics Particle Theory (student)   http://www.pact.cpes.sussex.ac.uk/
================ An eclectic mix of fact and theory. =================

• Follow-Ups:
  • Re: Problem with matching.
    • From: DrBob <drbob@bigfoot.com>
  • Re: Problem with matching.
    • From: yehuda ben-shimol <benshimo@bgu.ac.il>