The del operator is defined as .
If each of a & b is a scalar field then .
If a and b are arbitrary scalar fields, show that
del.[del(a)xdel(b)] = 0.
Is this anything to do with perpendicular vectors as I remember if two vectors are indeed perp., then the dot product of both of them equals 0. Or is something totally different here?
del = operator which looks like an upside triangle