I set up a 3-dimensional Euclidean manifold, defining both Cartesian and spherical coordinates, charts, and frames.. Next, I define a scalar field:
> psi = E.scalar_field({c_E: function('psi')(r,th,ph)},
> name='psi',latex_name='\psi')
>
See attached file "Euclid.sage" for details
Now, attempting to calculate the Laplacian of psi results in a traceback:
TypeError: Symbolic function psi takes at most 2 arguments (3 given)
>
See attached file "Euclid.trace" for details.
If, however, I display psi between creating it and taking the Laplacian,
then there is no error and traceback.
# The following line is required in order for the Laplacian to be computed.
> psi.disp()
> #
>
I conclude there is something about the scalar field which is not being
defined until the .display() is executed.
Is this the intended behavior, or an oversight?
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Euclid.trace
Description: Binary data
Euclid.sage
Description: Binary data
