Equation Icon  2 2 g(buffer zone) = η ⊕ m ∕r ⊕ m ∕r ⊕ ... ⊕ r∕ℛ ⊕ m∕ ℛ ⊕ m2 ∕(rℛ ) ⊕ ... 2 2 2 2 2 ⊕ r ∕ℛ ⊕ mr ∕ℛ ⊕ m ∕ℛ ⊕ ... ⊕ ... (557 )