#11539: Sage incorrectly interprets factorials in equations.
-------------------------+--------------------------------------------------
Reporter: mhansen | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.2
Component: symbolics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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{{{
sage: maxima(factorial(x) == 0).sage()
x != 0
}}}
Running the following two commands to change how factorials are printed in
Maxima will fix this:
{{{
sage.calculus.calculus.maxima.eval(r":lisp (defun msize-factorial (x l r)
(setq l (msize (cadr x) (revappend '(#\f #\a #\c #\t #\o #\r #\i #\a #\l
#\() l) nil 'mparen 'mparen) r (list 1 #\) ) ) (list (+ (car l) (car r)) l
r)) ")
sage.calculus.calculus.maxima.eval(r":lisp (defprop mfactorial msize-
factorial grind)")
}}}
We should run these when the Maxima interface is started.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11539>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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