[Couenne] What is mean of the sentence that it does not understand ">", but only ">="?

[lili tan]

What is mean of the sentence that it does not understand ">", but only ">="? I can ">=" in COUENNE user manual.

--- 11年3月15日，周二, Stefan Vigerske <stefan at math.hu-berlin.de> 写道：

> 发件人: Stefan Vigerske <stefan at math.hu-berlin.de>
> 主题: Re: [Couenne] can COUENNE find a solution for the constraint satisfaction question?
> 收件人: "lili tan" <tanlili2002 at yahoo.com.cn>
> 抄送: couenne at list.coin-or.org
> 日期: 2011年3月15日,周二,上午2:15
> Hi,
> 
> > If I want to solve a constraint satisfaction question,
> when I set objective function to a constraint, can COUENNE
> find a solution for the constraint satisfaction question?
> For example, objective function is min
> 0   s.t. x1*x2+x3>0 and x2+x1>=7. Can
> COUENNE find a solution (x1,x2, x3) that satisfy
> x1*x2+x3>0 and x2+x1>=7?
> 
> Yes, maybe.
> It does not understand ">", but only ">=".
> And you only get a solution that satisfies the constraints
> within some
> tolerances.
> It's numerics.
> 
> Stefan
> > 
> > 
> >       
> > 
> > 
> > _______________________________________________
> > Couenne mailing list
> > Couenne at list.coin-or.org
> > http://list.coin-or.org/mailman/listinfo/couenne
> > 
> 
> 
> -- 
> Stefan Vigerske
> Humboldt University Berlin, Numerical Mathematics
> http://www.math.hu-berlin.de/~stefan
>