I decided to dig further. Maxima's documentation <http://maxima.sourceforge.net/docs/manual/maxima_singlepage.html#SEC93> contains information that Sage's docs lack:
infinity (complex infinity) is returned when the limit of the absolute > value of the expression is positive infinity, but the limit of the > expression itself is not positive infinity or negative infinity. > That explains it. I guess that if a Maxima user sees infinity, then s/he knows to do something more to resolve whether it's inf or minf. But: 1. Should Sage's documentation include this, as well? 2. Is there some way in Sage to distinguish Maxima's complex infinity from Sage's +infinity, the way Maxima itself does? -- 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 https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.