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 = −A
^{
T
}
.
If the entry in the i-th row and j-th column is a
_{
ij
}
, i.e.
A = (a
_{
ij
}
)
then the symmetric condition becomes
a
_{
ij
}
= −a
_{
ji
}
.

You should determine whether the specified square matrix is skew-symmetric or not.

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