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Re: How to remove Head from expression

  • To: mathgroup at smc.vnet.net
  • Subject: [mg97800] Re: How to remove Head from expression
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Sun, 22 Mar 2009 05:46:45 -0500 (EST)
  • References: <gq2f0l$eem$1@smc.vnet.net>

Hi,

a) your examples are incomplete syntax and I can only guess what
    it may mean
b) Sequence[] is your friend
    Reduce[{# < 0,Sequence@@ mainrules}]&

Regards
   Jens

dragec wrote:
> Dear,
> I have
> 
> Reduce[{# < 0, 0 < k < 1, b > 0}]& ....
> 
> I would like to have:
> mainrules = {0 < k < 1, b > 0};
> Reduce[{# < 0, mainrules}]& ....
> 
> What to apply on second argument of Reduce, to command work fine.
> In above example Head of mainrules is excess, and command not works.
> 
> THX
> 


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