Dear sage-devel, Applying full_simplify() to gamma functions sometimes causes an error. For example, this is correct:
sage: gamma(4/3).full_simplify() 1/3*gamma(1/3) but this fails: sage: gamma(1/3).full_simplify() boom! The error occurs because full_simplify() here runs the following Maxima command: minfactorial(factcomb(makefact(gamma(1/3)))); This returns (-2/3)! [in Maxima] which then gets converted to Sage as factorial(-2/3). Since the Sage function factorial() is only defined on non-negative integers, this causes an error. I have created a Trac ticket for this (Trac #9240): http://trac.sagemath.org/sage_trac/ticket/9240 and uploaded a patch to fix it. Best, Tom --- Tom Coates Royal Society University Research Fellow Reader in Pure Mathematics Imperial College London -- 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
