#6559: Real domain for symbolic variables
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Reporter: gmhossain | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.3.2
Component: symbolics | Keywords: pynac
Author: Golam Mortuza Hossain, Burcin Erocal | Upstream: N/A
Reviewer: Karl-Dieter Crisman | Merged:
Work_issues: |
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Changes (by kcrisman):
* status: needs_review => needs_work
Comment:
Followup:
Adding the referee patch causes a number of segfaults in things relating
to assumptions. For example, the calculus/calculus.py doctest where it is
assumed that abs(q)<1, and the one in calculus/wester.py where it is
assumed that x>=y, y>=z, z>=x. It is not consistent whether the
assumption itself or the thing using the assumption causes the hang. Is
it possible that the _is_* methods or the info flags in ginac/decl.pxi are
responsible? This is a question out of ignorance; I don't see how they
would interfere with Maxima or the use of it by (e.g.) symbolic_sum, but
it's all I can think of.
Also, the citation.pyx and random_tests.py are repeatable.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6559#comment:13>
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