On May 19, 2016, at 01:55 , Alberto Verga wrote:
> This seems to work
> r = matrix(CallableSymbolicExpressionRing((theta,)), cos(theta/2)*s0 -
> I*sin(theta/2)*sy)
>
> Are there other possibilities?
I believe that your original code does not define a function. Try something
like this:
def r(theta):
return cos(theta/2)*s0 - I*sin(theta/2)*sy
Check the doc at python.org (function definition, ...).
HTH
Justin
--
Justin C. Walker, Curmudgeon-At-Large, Director
Institute for the Enhancement of the Director's Income
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The path of least resistance:
it's not just for electricity any more.
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