You'll have to use the hold=True argument to not evaluate such expressions automatically:
sage: x.add(-oo, hold=True) <= 0 x - Infinity <= 0 On Tuesday, March 26, 2013 5:59:47 AM UTC+1, tvn wrote: > > In my project I often have inequalities x <= c , x+y <= c, x -y <= c and > to make things uniform, I move all the consts to the lhs, e.g. x <= c > becomes x - c <= 0 . However this becomes problem when c is Infinity > because Sage automatically converts x - oo <= 0 to -Infinity <= 0 and > removes all variables in the original relation. Is there a way to get > around this ? I thought about creating a new variable to represent oo but > thought there could be easier way. > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
