In the above, are three orthogonal axis is a 3-dimensional Vector field is the determinant of a matrix is the Del or Nabla vector Operator
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In the above, ex,ey,ez are three orthogonal axis F:R3→R3 is a 3-dimensional Vector field ∣⋅∣ is the determinant of a matrix ∇:=(∂x1∂,⋯,∂xn∂) is the Del or Nabla vector Operator