#12322: invalid simplification of complex logarithm
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Reporter: mjo | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: symbolics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by kcrisman):
Ah, [http://trac.sagemath.org/sage_trac/search?q=radcan radcan]. Our
favorite [http://ask.sagemath.org/question/767/simplification-errors-in-
simple-expressions problem] in Sage simplification - see #8497 for the
last time this became a brouhaha. See #11912 for the followup to that,
and #11668 for why this probably is happening (temporarily going to reals
for the domain), and #3520 for yet another example.
Basically, we have a difference of opinion between some users and Maxima
as to what a simplification is. Is it a simplification of ''symbolic
expressions'' which may be multivalued, or a simplification of functions?
Good luck finding a resolution; I have no good ideas on these issues right
now, having wrestled with the other tickets in vain. I think it would be
unfortunate to remove `radcan` from full simplification.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12322#comment:4>
Sage <http://www.sagemath.org>
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