On Dec 4, 2008, at 4:50 PM, William Stein wrote:
In case my response above was ambiguous, I'm very much in favor of their being a way to change how the symbolic I prints. Wait a minute, I just realized that I designed and imlemented a very nice way to do this sort of thing over THREE YEARS ago, but nobody ever seemed to use it. Check this, which hasworked (more generically) since Sage-1.0: sage: I.rename('_j') sage: I _j sage: expand((1+i)^2) 2*_j sage: expand((2+3*i)^2) 12*_j - 5You can actually rename most anything that isn't defined by Cython code:sage: f = sin(2*I) + cos(3*x); f cos(3*x) + _j*sinh(2) sage: f.rename('fred') sage: f fred
The only problem I see with this is that it doesn't free up the original. One reason for changing the symbolic I, is to be able to use it for other variables.
Cheers, Tim. --- Tim Lahey PhD Candidate, Systems Design Engineering University of Waterloo http://www.linkedin.com/in/timlahey
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