Le jeudi 11 juillet 2013 21:26:43 UTC+2, mmarco a écrit :
>
>
> It looks very good. Just one remark: i think that the different functions 
> you define (Lie, xdef...) should be methods better than external functions. 
> In general, the use seems a bit confuding to me... i would say that it 
> looks much more mathematica-like than pythonic.


Actually the functions Lie and xder are shortcuts to class methods: here 
are their definitions:

 
def xder(form):
    r"""
    Exterior derivative of a differential form
    """
    return form.exterior_der()



def Lie(vector, tensor):
    r"""
    Lie derivative of a tensor field with respect to a vector field
    """
    return tensor.lie_der(vector)

We thought these shortcuts are more user friendly, being closer to the 
standard mathematical notation.

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