Re: how to get rid of extra parentheses ?

*To*: mathgroup at smc.vnet.net*Subject*: [mg92530] Re: how to get rid of extra parentheses ?*From*: Mark Westwood <markc.westwood at gmail.com>*Date*: Thu, 2 Oct 2008 18:49:27 -0400 (EDT)*References*: <gc2167$qa4$1@smc.vnet.net>

On 2 Oct, 09:36, "Obaid Rehman" <Obaid.Reh... at student.adfa.edu.au> wrote: > Hi , there > > I am wondering if some one can help me in my issue. > > After some Algebraic manipulation I get the result but it is inside the > two parenthesis e.g. {{........... }}. The problem is that Mathematica > understand it as a list or matrix entry. > > If I need to use this result directly into the matrix manipulation it > gives the error. Question is how to get rid these extra parentheses in > the result that Mathematica add itself? Hi Obaid Have a look at the documentation for Part and Flatten. The former is useful for extracting parts of expressions (such as the contents of {{ }} ) and the latter is useful for removing {{ }}. However, be aware that Mathematica's use of brackets is not entirely arbitrary, so make sure you understand why you get the result you do. Regards Mark Westwood > > e.g > > {{cb S V/ 2}} > > U can see there is no need of these extra parenthesis > > Obaid > > This message is intended for the addressee named and may contain > confidential information. If you are not the intended recipient, please > delete the message and notify the sender. Views expressed in this > message are those of the individual sender and not necessarily the views > of the University of New South Wales.