On Friday, May 9, 2014 12:35:30 PM UTC-7, jason wrote: Mike Hansen and I had a conversation about this at one point, and I > think we concluded that instead of looking at the base ring in the case > of SR, we should instead look at the specific matrix and decide if it > was "exact" or an approximation. For example, an SR matrix with just > integers and/or variables could be considered exact, while an SR matrix > with floating point numbers wouldn't. >
Determining that is going to be rather expensive and one can find weird things in SR: sage: cos(x).series(x,10) in SR True sage: SR(pAdicField(7)(2))+x in SR True -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
