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 → ι → ο be given.
Apply pack_b_b_e_e_2_eq2 with
field0 x0,
field1b x0,
field2b x0,
field4 x0,
RealsStruct_one x0,
x1,
x2,
λ x4 x5 . x3 x5 x4 leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.