robert.dodier at gmail.com
Thu Jun 28 10:01:23 CDT 2007
On 6/27/07, Barton Willis <willisb at unk.edu> wrote:
> I placed a new topoly (renamed to_poly) in CVS
Thanks a lot for working on this, Barton.
I think it will find a lot of uses.
> to_poly returns a list with two members. The second list member gives
> conditions on the variables
> (%i1) e : to_poly(abs(x)-8);
> (%o1) [[%g10-8,%g10^2-x^2],[carg(%g10)=0]]
It seems like this could be more clearly expressed as
if carg(%g10)=0 then [%g10-8,%g10^2-x^2]
or some other conditional expression.
> (%i9) perfect_p(n) := is(n = apply("+",
Hmm. It seems like it would be useful to allow the second
argument of apply to be a set when the first argument is an
n-ary commutative operator (or maybe just commutative).
Just daydreaming here.
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