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.
Let x5 of type ι be given.
Apply unknownprop_c5e2164052a280ad5b04f622e53815f0267ee33361e4345305e43303abef2c1b with
6,
λ x6 . If_i (x6 = 0) x0 (If_i (x6 = 1) x1 (If_i (x6 = 2) x2 (If_i (x6 = 3) x3 (If_i (x6 = 4) x4 x5)))),
4,
λ x6 x7 . x7 = x4 leaving 2 subgoals.
The subproof is completed by applying unknownprop_654519f01548f33205926d1aaa6b95e492610734742874515a5e3d5687329b5d.
Apply unknownprop_5a150bd86f4285de5d98c60b17d4452a655b4d88de0a02247259cdad6e6d992c with
4 = 0,
x0,
If_i (4 = 1) x1 (If_i (4 = 2) x2 (If_i (4 = 3) x3 (If_i (4 = 4) x4 x5))),
λ x6 x7 . x7 = x4 leaving 2 subgoals.
The subproof is completed by applying unknownprop_eaa778def292ef273cdc44e35415a8a42535318d4e19c13ee6ceed0c5eb3f775.
Apply unknownprop_5a150bd86f4285de5d98c60b17d4452a655b4d88de0a02247259cdad6e6d992c with
4 = 1,
x1,
If_i (4 = 2) x2 (If_i (4 = 3) x3 (If_i (4 = 4) x4 x5)),
λ x6 x7 . x7 = x4 leaving 2 subgoals.
The subproof is completed by applying unknownprop_75032dcd8ad59e83bbbd268576bb90fef789394372056ddc79da134e39e13bc4.
Apply unknownprop_5a150bd86f4285de5d98c60b17d4452a655b4d88de0a02247259cdad6e6d992c with
4 = 2,
x2,
If_i (4 = 3) x3 (If_i (4 = 4) x4 x5),
λ x6 x7 . x7 = x4 leaving 2 subgoals.
The subproof is completed by applying unknownprop_6e85348d9b8c1714b2cb6d272e0e84b0638dd511839ada963d83f563a6d15dde.
Apply unknownprop_5a150bd86f4285de5d98c60b17d4452a655b4d88de0a02247259cdad6e6d992c with
4 = 3,
x3,
If_i (4 = 4) x4 x5,
λ x6 x7 . x7 = x4 leaving 2 subgoals.
The subproof is completed by applying unknownprop_6959d9e660b21c56708e454ccc9acedd4faf4caf2ab54adc55f634a87d3efc20.
Apply unknownprop_6f44febdf8a865ee94133af873e3c2941a931de6ac80968301360290e02ca608 with
4 = 4,
x4,
x5.
Let x6 of type ι → ι → ο be given.
Assume H0: x6 4 4.
The subproof is completed by applying H0.