Vector Norms
L1 norm
It is defined as the sum of magnitudes of each component
a = ( a1 , a2 , a3 )
L1 norm of vector a = |a1| + |a2| + |a3|
L2 norm
It is defined as the square root of sum of squares of each component
L2 norm of vector a = √( a12 + a22 + a32 )