'Calculates the absolute value of a vector that has the maximum
entries row-wise of both given vectors. This can be used as
normalization since this value is guaranteed to be bigger or equal
the difference value of those two vectors.
:param other: The vector to normalize with.
:return:      A float value bigger or equal than the difference
between self and other.'

def maxabs(self, other):

    return sqrt(sum(((max(x, y) ** 2) for (x, y) in zip(self, other))))
