| ∀ p. p ∈ ps → fpathtolink(p) ∈ ls, ∀ alink. alink ∈ ls → (∃ p. p ∈ ps ∧ fpathtolink(p) = alink), ∀ p, q. p ∈ ps ∧ q ∈ ps ∧ fpathtolink(p) = fpathtolink(q) → p = q ⊦ # ps = # ls ↔ true |
∀ p, q. p ∈ ps ∧ q ∈ ps ∧ fpathtolink(p) = fpathtolink(q) → p = q, ∀ alink. alink ∈ ls → (∃ p. p ∈ ps ∧ fpathtolink(p) = alink), ∀ p. p ∈ ps → fpathtolink(p) ∈ ls ⊦ # ps = # ls ↔ true