Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Let x3 of type ι be given.
Let x4 of type ι be given.
Assume H1: x4 ∈ x0.
Let x5 of type ι be given.
Assume H2: x5 ∈ x1.
Apply unknownprop_09f3187fe3c530515ad90a81cd9debeb9cdc8829026c9bef164bdcf00924d4a3 with
x0,
setexp x2 x1,
x3,
x4 leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
Apply unknownprop_09f3187fe3c530515ad90a81cd9debeb9cdc8829026c9bef164bdcf00924d4a3 with
x1,
x2,
ap x3 x4,
x5 leaving 2 subgoals.
The subproof is completed by applying L3.
The subproof is completed by applying H2.