Bug report ID:635627 - subst([...] is order-dependent

Am Mittwoch, den 31.03.2010, 14:10 -0400 schrieb Joseph Cusumano:
> 
> Hello:
> 
> I admit up front to not having the perspective (or skills) of a
> developer, so maybe I'm missing something fundamental. However, I do
> not understand why this should be considered a bug. I have a fair
> amount of code in Maple (which has a similar property to its
> substitution command) and now Maxima that depends on (or, at the vary
> least, assumes) this feature property.
> 
> I would say at the very least this should be controllable via an
> external variable, e.g. "subst_sequence" equals "serial" or
> "parallel".

Hello Joseph,

thank you for your comment.

Yes, I think it is no problem to get both the parallel substitution and
the serial substitution we already have.

Because, now the serial substitution is the default and the code of
to_poly_solver depends on this behavior we might first introduce the
parallel substitution as an option to the function $substitute.

Dieter Kaiser