However , the same arguments apply for n ( \\ displaystyle n ) - dimensional problems though there are some additional terms in the expressions when the coordinate system is not orthogonal .
For simplicity , we again restrict the discussion to three dimensions and orthogonal curvilinear coordinates .
The same arguments apply for n ( \\ displaystyle n ) - dimensional problems though there are some additional terms in the expressions when the coordinate system is not orthogonal .
For simplicity , we again restrict the discussion to three dimensions and orthogonal curvilinear coordinates .