#12834: Modify subs so that it can accept multiple equations just like subs_expr
-------------------------------------+-------------------------------------
Reporter: JoalHeagney | Owner: AlexGhitza
Type: enhancement | Status: needs_info
Priority: minor | Milestone: sage-6.4
Component: algebra | Resolution:
Keywords: subs algebra | Merged in:
solving | Reviewers:
Authors: Michael Orlitzky | Work issues:
Report Upstream: N/A | Commit:
Branch: public/12384 | 045eebfd67858405c6665acfa1eea5f22ca7fc6f
Dependencies: | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by vdelecroix):
* status: needs_review => needs_info
Comment:
Hi Marc,
There is some difference of designs.
- in your version, the rightmost occurrence of a substitution takes
precedence, while in Michael's one an error is raised
- you deprecate `subs_expr` and `substitute_expression` (I think this is
good)
- is this a bug or a feature?
{{{
sage: var('x,y,t')
sage: A = cos(x) + sin(y) + x^2 + y^2 + t
sage: A.subs({x^2 + y^2: t})
x^2 + y^2 + t + cos(x) + sin(y)
sage: A.subs({cos(x) + x^2 + sin(y) + t + + y^2: 1})
1
}}}
- I like very much the presence of examples involving maple and
mathematica
Vincent
--
Ticket URL: <http://trac.sagemath.org/ticket/12834#comment:15>
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.
