#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 mjo):
Replying to [comment:6 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.
Yep, and modulo #12845, the same goes for `simplify_radical()`.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12780#comment:7>
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