A diagram depicting the area
[math]\displaystyle{ \Omega }[/math] which is bounded by the rectangle
[math]\displaystyle{ \partial\Omega }[/math].The rectangle
[math]\displaystyle{ \partial\Omega }[/math] is bounded by
[math]\displaystyle{ -h\leq z \leq0 }[/math] and
[math]\displaystyle{ -\infty/-N\leq x \leq N/\infty }[/math]