My sympy-tensor branch at github (git clone
http://github.com/brombo/sympy-tensor.git) has been updated. Mistakes
in differentiation of abstract tensors have been corrected. A
ConcreteTensor class has been added to allow one to make an abstract
tensor concrete.
The latex.py class in printing has been modified to allow printing of
tensors with latex '\indices' macro and to allow super-superscripts
which is required (sometimes) for printing concrete tensors.
The documentation for both tensor and latex have both been updated.
Just 'make html' in sympy-tensor/doc to compile documentation.
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