![[old] Skew-symmetric Matrix](https://js-static.checkio.org/media/logos/task/middle/skew-new-disabled.png)
[old] Skew-symmetric Matrix
In mathematics, particularly in linear algebra, a skew-symmetric matrix (also known as an antisymmetric or antimetric) is a square matrix A which is transposed and negative. This means that it satisfies the equation A = −AT. If the entry in the i-th row and j-th column is aij, i.e. A = (aij) then the symmetric condition becomes aij = −aji.
You should determine whether the specified square matrix is skew-symmetric or not.
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