On Wednesday, September 26, 2012 1:19:31 PM UTC-7, Greg Laun wrote:
>
> Whoops, gmail sent the email before I was finished.
>
> I think a more appropriate way to do the comparison would be to check
> if self(x) == x. This is how contains is implemented in parent.pyx.
>
In theory this looks okay. In practice, I think there is work to be done:
sage: m = identity_matrix(QQ, 2)
sage: G = GL(2, QQ)
sage: m == G(m)
False
Oh, maybe this is the right thing:
sage: m == G(m).matrix()
True
--
John
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