>
> The following changed behaviour leads to a few fails:
>
> sage: a,b = var('a b')
> sage: abs(sqrt(x))
> sqrt(abs(x))
> sage: sqrt(abs(x)^2)
> sqrt(x*conjugate(x))
> sage: abs(x)^2
> x*conjugate(x)
>What does Maxima do with these? I know that there has been endless discussion of what to do with things involving abs, square, and sqrt. > sage: A = abs((a+I*b))^2 > sage: A > (a + I*b)*(conjugate(a) - I*conjugate(b)) > sage: A.canonicalize_radical() > a^2 + b^2 > Given the history of radcan I wouldn't necessarily worry about this, though what the previous behavior is would be worth looking at. > sage: imag(A) > 0 > sage: imag(A.canonicalize_radical()) > 2*imag_part(a)*real_part(a) + 2*imag_part(b)*real_part(b) > sage: f = sqrt(abs(x)^2); f.canonicalize_radical() > x > > Reason is probably these commits: > > https://github.com/pynac/pynac/commit/b645d3c200e74531f735d786259d043cbffe758a > > https://github.com/pynac/pynac/commit/565d0c3307b708cc266d27d3d1344e6de9fbc513 > > This one looks worth doctesting, actually, if there is a way to get Py/Ginac's assumption framework operating. > So, do we want this? > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
