"Alec Mihailovs" <[EMAIL PROTECTED]> writes: > May I suggest to add timing to the examples in the documentation - that > would be very useful. > > For example, in recent discussion about Bell numbers on the math-fun list, > it was noted that it takes a very long time to calculate bell(1000) in Maple > while BellB[1000] in Mathematica is much faster. I looked at the > corresponding section in SAGE Reference manual, > > http://modular.math.washington.edu/sage/doc/html/ref/module-sage.combinat.combinat.html > > and couldn't tell how much time it takes in SAGE (probably, rather long, > because it wraps GAP's Bell.)
sage: sage.combinat.expnums.expnums(10, 1) [1, 1, 2, 5, 15, 52, 203, 877, 4140, 21147] for computing Bell numbers quickly. It's not asymptotically faster than Gap, but it is fairly tuned. Nick --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
