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Re: Simplify puzzle

• To: mathgroup at smc.vnet.net
• Subject: [mg124929] Re: Simplify puzzle
• From: Alan <alan.isaac at gmail.com>
• Date: Sun, 12 Feb 2012 05:05:52 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <jfu0va$c92$1@smc.vnet.net> <jg5qga$hbd$1@smc.vnet.net> <jgaul1$eub$1@smc.vnet.net>

Here's an even simpler case that fails:

FullSimplify[Sign[a*b - c*(d + e)],
 Assumptions -> a*b - c*(d + e) > 0]

Alan Isaac