#18092: evaluating symbolic expressions (without conversion to SR, i.e., 
staying in
ring of values)
-------------------------+-------------------------------------------------
       Reporter:         |        Owner:
  dkrenn                 |       Status:  needs_info
           Type:         |    Milestone:  sage-6.6
  enhancement            |   Resolution:
       Priority:  major  |    Merged in:
      Component:         |    Reviewers:
  symbolics              |  Work issues:
       Keywords:  sd66   |       Commit:
        Authors:         |  276f0f3d3583c66c7e137350c578e8588c9b236d
  Daniel Krenn           |     Stopgaps:
Report Upstream:  N/A    |
         Branch:         |
  u/dkrenn/SR/eval       |
   Dependencies:         |
-------------------------+-------------------------------------------------

Comment (by vdelecroix):

 Replying to [comment:24 dkrenn]:
 > Replying to [comment:23 vdelecroix]:
 > > Replying to [comment:22 dkrenn]:
 > > > Replying to [comment:21 vdelecroix]:
 > > > > Would this ticket solve the following issue (from #9787)?
 > ...
 > > Sorry. This was not my question. What would be `parent(f(1.2))`? Is
 this modified by this ticket?
 >
 > No, not modified by this ticket.

 I saw too late your answer on #9878 ;-)

 By the way, let me repeat another question from #9878. I found the
 behavior of `evaluate` in your [comment:22 comment:22] very weird. I
 thought it was a modification of `.subs` in order to take care of the
 parent. But
 {{{
 sage: f(x) = 2*x
 sage: f.subs(x=3)
 x |--> 6
 }}}
 ie, `f` remains a function. It is hopefully not changed into a number.

--
Ticket URL: <http://trac.sagemath.org/ticket/18092#comment:25>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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