... ¯x, ¯x, z) ∀z ∈ S(¯x, ¯y)R(¯y, ¯x, ¯x, z) ∀z ∈ S(¯x, ¯y)R R(y, x, t, z)0 ∈ F (y, x, t, z) F(iii) t ∈ S(x, y)R(y, x, t, z) ∀z ∈ S(x, y)(yβ, xβ, tβ, zβ) → (y, x, t, z) R(yβ, xβ, ... ¯x, t) ≥ 0, ∀t ∈ P2(¯x) y ∈ Q(¯x, t)F : K × D × D → 2YF (y, x, t) = Φ(y, ¯x, t)−R+(GEP ) II 0 ∈ F (y, ¯x, t), ∀t ∈ P2(¯x) y ∈ Q(¯x, t),Φ(y, ¯x, t) ≥ 0, ∀t ∈ P2(¯x) y ∈ Q(¯x, t).< ... z)∀z ∈ DSố hóa bởi Trung tâm Học liệu – Đại học Thái Nguyên http://www.lrc-tnu.edu.vn(GEP ) II 0 ∈ F (y, ¯x, t), ∀t ∈ P2(¯x) y ∈ Q(¯x, t),G(y, ¯x, t) ⊂ H(y, ¯x, ¯x) + C(y, ¯x), ∀t ∈ P2(¯x)...