#16007: give solution constants of ODEs unique names
-------------------------------------+-------------------------------------
Reporter: rws | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.3
Component: calculus | Resolution:
Keywords: | Merged in:
Authors: Ralf Stephan | Reviewers: Nils Bruin, Karl-
Report Upstream: N/A | Dieter Crisman
Branch: | Work issues:
u/rws/ticket/16007 | Commit:
Dependencies: | 884bc6841811077d55a9048d616cb973e313ef24
| Stopgaps:
-------------------------------------+-------------------------------------
Changes (by kcrisman):
* status: needs_review => needs_work
Comment:
Is the line
{{{
sage: from sage.calculus.calculus import
symbolic_expression_from_maxima_string as sefms
}}}
necessary in the doctest? Though it doesn't hurt anything.
----
{{{
sage: sefms('%k1*x + %k2*y + %c')
_K1*x + _K2*y + _C
sage: _._latex_()
'_{K_{1}} x + _{K_{2}} y + _{C}'
}}}
I have a feeling this is not what we are looking for, but I don't know how
to deal with it best. Presumably 'naked variables/constants' don't need
to be subscripted in typesetting.
One idea, which [http://sagemath.org/doc/prep/Programming.html#gotchas-
from-names-and-copies mimics our handling of lambda], would be to make the
constants have names `k1_` and `c_` instead.
{{{
sage: var('lambda_')
lambda_
sage: latex(_)
\lambda
sage: var('beta_')
beta_
sage: latex(_)
\beta
sage: var('k1_')
k1_
sage: latex(_)
\mathit{k1}
}}}
Note that this is not what is desired either, since
{{{
sage: latex(k1)
k_{1}
sage: latex(k1_)
\mathit{k1}
sage: latex(c_)
c
}}}
I don't know whether this is a good solution, but we do need proper
typesetting of these guys.
--
Ticket URL: <http://trac.sagemath.org/ticket/16007#comment:29>
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.
