At: member col subst 2 2 1
1. c: Label
Collection(Term)
2. r: rel()
3. r': rel()
4. as: (Label
Term) List
5. 1of(unzip(as)) = rel_vars(r)
6. 
i:
. i < ||as|| 
2of(as[i]) 
c(1of(as[i]))
7. r' = rel_subst(as;r)
8. i:
9. i < ||2of(unzip(as))||
i < ||as||
By: AllHyps (
i.(Unfold `unzip` i) THEN (Reduce i) THEN (RWW "map_length_nat" i))
Generated subgoals:None
About:
