Let x0 of type ι be given.
Apply unknownprop_f95c994468e053a5f3a3fd1414f88d890e2044d71aa0b2aca169453322d6ef34 with
x0,
x0 = 236dc.. (ce322.. x0) (f6a32.. x0) leaving 2 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H2.