Apply unknownprop_c9b34bc382b6d599e61c555eac34a76c451754eb682c17d99a93f2a1e695d561 with λ x0 x1 : ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι . Church17_to_u17 (Church17_perm_1_3_0_2_5_7_4_6_10_8_11_9_13_14_15_12 x1) = u15.

Let x0 of type ι → ι → ο be given.

Assume H0: x0 (Church17_to_u17 (Church17_perm_1_3_0_2_5_7_4_6_10_8_11_9_13_14_15_12 (λ x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14 x15 x16 x17 . x15))) u15.

The subproof is completed by applying H0.

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Proofgold Proof