#17556: Move simplify_log() from simplify_full() to simplify_real()
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Reporter: mjo | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.5
Component: symbolics | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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The `simplify_log` function assumes that its argument is real; otherwise
the log contraction operation is invalid. For example,
{{{
sage: x,y = SR.var('x,y')
sage: assume(y, 'complex')
sage: f = log(x*y) - (log(x) + log(y))
sage: f(x=-1, y=i)
-2*I*pi
sage: f.simplify_log()
0
}}}
Now that we have a `simplify_real()` method, why not move `simplify_log()`
there instead?
In the process, the newer `simplify_rectform()` can be added to
`simplify_full()`.
I'm working on a patch for this.
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Ticket URL: <http://trac.sagemath.org/ticket/17556>
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