| ⊦ (∃ n0. eq-entry(n0, v × m) ∈ q ∨ eq-entry(n0, v × m) = eq-entry(n, lref0)) ↔ (∃ n. eq-entry(n, v × m) ∈ q) ∨ v × m = lref0, v × m = lref0 |
⊦ (∃ n0. eq-entry(n0, v × m) ∈ q ∨ eq-entry(n0, v × m) = eq-entry(n, lref0)) ↔ (∃ n. eq-entry(n, v × m) ∈ q), v × m = lref0