#12780: Be more careful about setting the Maxima 'domain'
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Reporter: mjo | Owner: burcin
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.1
Component: symbolics | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: #12845 | Stopgaps:
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Comment (by kcrisman):
> With `simplify_log()`, it's less clear. Right now, if I do,
>
{{{
> sage: f = sqrt(x**2)
> sage: f
> sqrt(x^2)
> sage: f.simplify_log()
> abs(x)
}}}
>
> we silently convert the expression to the reals. This isn't a result of
the log simplification algorithm; it's a side effect of setting the domain
to real (which provides no other ''tested'' benefits).
Hmm, yeah, that seems bad. So all the "usual" results of `simplify_log`
are still obtained if we remove the domain business (as you are implying)?
Then this sounds good.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12780#comment:6>
Sage <http://www.sagemath.org>
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