Let x0 of type ι be given.
Let x1 of type ι be given.
Apply RealsStruct_lt_leq_asym with
x0,
x1,
field4 x0 leaving 5 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
Apply RealsStruct_zero_In with
x0.
The subproof is completed by applying H0.
The subproof is completed by applying H2.
The subproof is completed by applying H3.