∀[l1,l2:IdLnk]. ∀[tg1,tg2:Id]. {(l1 = l2 ∈ IdLnk) ∧ (tg1 = tg2 ∈ Id)} supposing rcv(l1,tg1) = rcv(l2,tg2) ∈ Knd
{ Auto }
1. l1 : IdLnk
2. l2 : IdLnk
3. tg1 : Id
4. tg2 : Id
5. rcv(l1,tg1) = rcv(l2,tg2) ∈ Knd
⊢ {(l1 = l2 ∈ IdLnk) ∧ (tg1 = tg2 ∈ Id)}