#19035: Improve assumption documentation and doctest recent improvements
-------------------------------------+-------------------------------------
Reporter: rws | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.10
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: Ralf Stephan | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/rws/doctest_syncing_of_elementary_assumptions_on_symbols_functions_with_pynac|
b198a3f0f2128016aefeb0134c61ee357a115bc9
Dependencies: #19312 | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by rws):
* status: new => needs_review
* commit: => b198a3f0f2128016aefeb0134c61ee357a115bc9
* type: defect => enhancement
Old description:
> With pynac-0.5 this will no longer give wrong results:
> {{{
> sage: assume(x,'integer')
> sage: x.is_integer()
> False
>
> sage: assume(x>0)
> sage: x.is_positive()
> False
>
> sage: f=function('f')(x)
> sage: assume(f>0)
> sage: f.is_positive()
> False
> }}}
> Syncing with Pynac will allow limited but fast decision making (without
> Maxima) through already existing flag logic in Pynac.
>
> https://github.com/pynac/pynac/issues/81
>
> The branch of this ticket contains adaptions on the Sage side. The Pynac
> interface declarations are already committed (appearing in version
> 0.4.4+). The complete interface may be in Pynac-0.5.
New description:
With pynac-0.5 this will no longer give wrong results:
{{{
sage: assume(x,'integer')
sage: x.is_integer()
False
sage: assume(x>0)
sage: x.is_positive()
False
sage: f=function('f')(x)
sage: assume(f>0)
sage: f.is_positive()
False
}}}
--
Comment:
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=b198a3f0f2128016aefeb0134c61ee357a115bc9
b198a3f]||{{{19035: document syncing of generic assumptions on
symbols/functions with Pynac}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/19035#comment:5>
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