Max-plus algebra addition
[X] = maxplusoplus(A,B)
This function returns Xi,j= ai,j⊕bi,j = max {ai,j, bi,j}.
Let ℊ be a mapping ℊ : ℝmax→ ℝmin difined by ℊ(x) = -x, ∀ x∈ ℝmax .
The mapping ℊ is an isomorphism, so the strucure ( ℝmax ,⊕,⊗) ≅ ( ℝmin ,⊕',⊗) .