#14608: Symbolic functions break the __hash__ contract
-----------------------------+------------------------
       Reporter:  vbraun     |        Owner:  burcin
           Type:  defect     |       Status:  new
       Priority:  major      |    Milestone:  sage-6.4
      Component:  symbolics  |   Resolution:
       Keywords:             |    Merged in:
        Authors:             |    Reviewers:
Report Upstream:  N/A        |  Work issues:
         Branch:             |       Commit:
   Dependencies:             |     Stopgaps:
-----------------------------+------------------------

Comment (by rws):

 See also #18092.

 The problem with simplify+substitute is probably another symptom of
 `NewSymbolicFunction`s not being preserved when going through Maxima and,
 if so, is restricted to user-defined functions. See e.g.
 {{{
 sage: ex = sin(x)+exp(pi)
 sage: ex.subs(sin(x)==1)
 e^pi + 1
 sage: ex.simplify().subs(sin(x)==1)
 e^pi + 1
 }}}

--
Ticket URL: <http://trac.sagemath.org/ticket/14608#comment:8>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

-- 
You received this message because you are subscribed to the Google Groups 
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.

Reply via email to