| ⊦ n0 < m0 ∧ n1 < m0 ∧ m0 ≤ # apebs ∧ n0 ≠ n1 ∧ valid-peb(v, m, apebs[n0]) ∧ valid-peb(v, m, apebs[n1]) → (∃ bag. valid-sqns(v, m, apebs, m0) = bag ++ apebs[n0].vidhdr.sqn ++ apebs[n1].vidhdr.sqn) |
n0 < m0, n1 < m0, valid-peb(v, m, apebs[n0]), valid-peb(v, m, apebs[n1]), m0 ≤ # apebs ⊦ n0 = n1, ∃ bag. valid-sqns(v, m, apebs, m0) = bag ++ apebs[n0].vidhdr.sqn ++ apebs[n1].vidhdr.sqn