Parallelogram Law
Let
denote the
Norm
of a quantity. Then the quantities
and
satisfy the parallelogram law if
If the
Norm
is defined as
(the so-called
L2-Norm
), then the law will always hold.
See also
L2-Norm
,
Norm
© 1996-9
Eric W. Weisstein
1999-05-26