Hello,
I think there are parenthesis missing in the output of this:
sage: from sage.manifolds.utilities import ExpressionNice
sage: x,y,u,v = var('x y u v')
sage: f = function('f')(x, y)
sage: ExpressionNice(f.subs(x=u+v,y=u-v).diff(v).diff(u))
d^2(f)/d(u + v)^2 - d^2(f)/du - v^2
I expected the output to be
d^2(f)/d(u + v)^2 - d^2(f)/d(u - v)^2
with parenthesis around (u - v).
Alex
--
You received this message because you are subscribed to the Google Groups
"sage-support" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sage-support+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/sage-support/fd978a52-62bb-4e15-9205-704e4b443121n%40googlegroups.com.
