| ⊦ ¬ v ∈ vols ∧ ¬ v ∈ avols ∧ # evol = # ebatbl → (abs○(avols[v, evol], apebs, vols[v, ebatbl], q, v) ↔ abs○(avols, apebs, vols, q, v)) |
# evol = # ebatbl ⊦ abs○(avols[v, evol], apebs, vols[v, ebatbl], q, v) ↔ abs○(avols, apebs, vols, q, v), v ∈ avols, v ∈ vols