<math> \psi(i,j,k) = \frac{1}{6} \big[ \psi(i+1,j,k) + \psi(i-1,j,k) + \psi(i,j+1,k) + \psi(i,j-1,k) + \psi(i,j,k+1) + \psi(i,j,k-1) \big] </math>
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Two types of domain boundary conditions can be applied:
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*Dirichlet boundary condition: ψ = 0
*Neumann boundary condition:
== 2D Quasi-Static Solution of TEM Transmission Line Structures ==