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why the type of A is "Vector" but not "Matrix" after assemble(a,tensor=A)

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why the type of A is "Vector" but not "Matrix" after assemble(a,tensor=A)?
And what is the exact meaning of 'tensor'?

I appreciate your help very much!!!

asked Nov 9, 2016 by fanronghong FEniCS User (1,680 points)

You need to post more code to get a meaningful answer. Tensor can refer to a tensor-like object of any dimension (typically a Vector or a Matrix).

commented Nov 9, 2016 by chris_richardson FEniCS Expert (31,740 points)
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