\BOOKMARK [1][-]{section.1}{The compositions of differential operations of the space R3}{}% 1
\BOOKMARK [1][-]{section.2}{The compositions of the differential operations and Gateaux directional derivative of the space R3}{}% 2
\BOOKMARK [1][-]{section.3}{The compositions of differential operations of the space Rn}{}% 3
\BOOKMARK [1][-]{section.4}{The compositions of differential operations and Gateaux directional derivative of the space Rn}{}% 4