Comment #5 on issue 2106 by mipavelka: Matrix of shape (1,1) and a number
can't be added
http://code.google.com/p/sympy/issues/detail?id=2106
Thanks for advice. It seems to be a way out of the problem.
However, if I have a 2x2 matrix M, a row vector v and a column vector w, I
have to write:
1 + v.dot(M*w)
instead of
1 + v*M*w
which is more clear. Actually, I can't see a reason why a 1x1 matrix
shouldn't be treated as a scalar.
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