Let x0 of type ι be given.
Let x1 of type ι be given.
Apply unknownprop_4dacc39fbff2a1eb7f64c88eae888b40bdb7083a731b4cd05ad435e42f13fcba with
minus_CSNo x0,
x0,
x1,
λ x2 x3 . x3 = x1 leaving 4 subgoals.
Apply CSNo_minus_CSNo with
x0.
The subproof is completed by applying H0.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
Apply add_CSNo_minus_CSNo_linv with
x0,
λ x2 x3 . add_CSNo x3 x1 = x1 leaving 2 subgoals.
The subproof is completed by applying H0.
Apply add_CSNo_0L with
x1.
The subproof is completed by applying H1.