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Re: How to =B1?

  • To: mathgroup at
  • Subject: [mg103679] Re: How to =B1?
  • From: David Bailey <dave at>
  • Date: Fri, 2 Oct 2009 08:23:35 -0400 (EDT)
  • References: <ha2113$n6o$>

olliH wrote:
> Hi how do I make an expression with the =B1 Operator?
> In = x =B1 1
> Out = {x+1,x-1}
> (=B1 is the plus/minus symbol if this does not show up
> properly - moderator)
First, please note that you can't put the extra Mathematica character 
codes into messages here, you must spell them out - e.g. \[PlusMinus]

This operator has no built-in meaning (like many others supplied by 
Mathematica), so the operator does nothing by default. However, it is 
easy to make it do something useful. For example you might decide to 
expand a list of expressions that contained this operator, using 
transformation rules.

David Bailey

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