> As ddrake pointed out when reviewing Trac #9240, I had misunderstood > the docstring of factorial() and so in Sage factorial(x) is in fact > equal to gamma(x+1): > > sage: factorial(5) > 120 > sage: factorial(1/2) > 1/2*sqrt(pi) > sage: factorial(1/21) > gamma(22/21) > > Is this supposed to be the case? If so then I will change the > documentation of factorial() to make this clear.
My vote is to have factorial(n) = n(n-1)...2.1 whenever n is integer. > sage: factorial(5) > 120 > sage: factorial(6) > 720 +1 Cheers, Florent -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
