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About binary relations

• To: mathgroup at smc.vnet.net
• Subject: [mg104021] About binary relations
• From: olfa <olfa.mraihi at yahoo.fr>
• Date: Fri, 16 Oct 2009 07:17:43 -0400 (EDT)

Hello Mathematica community,
is there a package in mathematica that allows me to manipulate binary
relations in order to do operations like
(R1 U R2)  o R3
Thank you.