constant N : Type.{1}
constants a b c : N
constant f : forall {a b : N}, N → N

check f
check @f
check @f a
check @f a b
check @f a b c

noncomputable definition l1 : N → N → N → N := @f
noncomputable definition l2 : N → N → N := @f a
noncomputable definition l3 : N → N := @f a b
noncomputable definition l4 : N := @f a b c

constant g : forall ⦃a b : N⦄, N → N

check g
check g a
check @g
check @g a
check @g a b
check @g a b c

noncomputable definition l5 : N → N → N → N := @g
noncomputable definition l6 : N → N → N := @g a
noncomputable definition l7 : N → N := @g a b
noncomputable definition l8 : N := @g a b c
noncomputable definition l9 : N → N → N → N := g