Hello, RR isn't named "Real numbers"; it is named "real field with 53 bits > precision" >
And, fair enough, the docstring of RR starts as follows: An approximation to the field of real numbers using floating point numbers with any specified precision. Answers derived from calculations in this approximation may differ from what they would be if those calculations were performed in the true field of real numbers. This is due to the rounding errors inherent to finite precision calculations. Maybe this paragraph should also mention that plus/minus infinity are representable in RR, even though they are not real numbers? After all, allowing plus/minus infinity in RR is a choice that is by no means forced upon us by working with finite precision. I'm used to PARI, where multiprecision reals do not include infinity; for example, minus infinity as an endpoint for numerical integration has to be specified as the 1-element vector [-1]. Peter -- 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/groups/opt_out.
