Comment #6 on issue 2107 by smichr: Real(0.1, 10) - Real(0.1, 10) ->
3.637923296e-13
http://code.google.com/p/sympy/issues/detail?id=2107
FWIW, if you cause self and -other to be normalized to the same value (0)
before adding, they add ok:
def __sub__(self, other):
return Ad
Comment #17 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
reply to comment 14:
It would make sense to define the A*B operation (where A and B are Matrix
instances) as
"If dimensions of neighbouring indeces
Comment #18 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
However, if the meaning of * should be dot or tensor product, SymPy should
be able to handle (from associativity):
a*b*C as (a \cdot b) C == a \cdo
Comment #19 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
reply to comment 14:
You can also put it differently:
If 1x1 matrices were the same as scalars, it would make sense.
I think that you mean that the ma
Comment #20 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
reply to comment 14:
You can also put it differently:
If 1x1 matrices were the same as scalars, it would make sense.
I agree that you the matrix multi
Comment #21 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
reply to comment 15:
I'd prefer the expression 1 + X not to be defined if X is a not 1x1 Matrix.
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Comment #15 on issue 388 by ellisonbg: NotImplementedError in matrices
http://code.google.com/p/sympy/issues/detail?id=388
I think we should create a MutableBasic class because there are other
classes that will have similar problems. Npt a simple fix though
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