Comment #11 on issue 2222 by [email protected]: Matrix([Matrix, ...]) should
check the row length of empty matrices
http://code.google.com/p/sympy/issues/detail?id=2222
Yes, I mean slicing.
Now I see that all variants of usage and generalization must be examined
deeper. (I also have not looked and the current usage of it in Integration3)
But I tend to separate classes with different behavior and to do not mix
the code of them with the aim of `a single multi-purpose class`, especially
when Python allow us to `mix them in usage` in convenient and right way.
The heritage of the past (mathematics of past century, and even theory of
group of 1930x) with no object oriented approach without that put the many
questions.
Additional info:
Empty matrix in mathematics [1], empty matrix in matlab [2], also there is
so called 3D matrix (which can by applied for multi-algebra )
[1]
http://en.wikipedia.org/wiki/Matrix_(mathematics)#Abstract_algebraic_aspects_and_generalizations
[2] http://www.kxcad.net/cae_MATLAB/techdoc/matlab_prog/f1-86359.html
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