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Question: Modifying Fundiff from the Physics package

Question:Modifying Fundiff from the Physics package

danielclark 5 Maple
physics
March 26 2013
1

I would like to be able to modify the Fundiff procedure from the Physics package to generalise it for my application by relaxing some of the constraints and changing to arbitrary direction rather than just a Dirac delta function.

In order to view the code, I write:

interface(verboseproc = 2);
print(Fundiff);

I then copied the code in order to modify it. However, there appear to be some functions that I do not have access to, including Tensor and TensorSort. How can I include these in my modified code?

In particular, I get the message:

"Error, (in Fundiff2) type `Tensor` does not exist"

I have searched for this function but cannot locate it.

Thank you for your help.
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