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Proofgold Proof

pf
Let x0 of type ι → ι → ο be given.
Assume H0: ∀ x1 x2 . x0 x1 x2 ⟶ x0 x2 x1.
Assume H1: ∀ x1 . x1 ⊆ u18 ⟶ atleastp u3 x1 ⟶ not (∀ x2 . x2 ∈ x1 ⟶ ∀ x3 . x3 ∈ x1 ⟶ (x2 = x3 ⟶ ∀ x4 : ο . x4) ⟶ x0 x2 x3).
Assume H2: ∀ x1 . x1 ⊆ u18 ⟶ atleastp u6 x1 ⟶ not (∀ x2 . x2 ∈ x1 ⟶ ∀ x3 . x3 ∈ x1 ⟶ (x2 = x3 ⟶ ∀ x4 : ο . x4) ⟶ not (x0 x2 x3)).
Let x1 of type ι be given.
Assume H3: x1 ∈ u18.
Let x2 of type ι be given.
Assume H4: x2 ∈ {x3 ∈ setminus u18 (binunion (DirGraphOutNeighbors u18 x0 x1) (Sing x1))|equip (binintersect (DirGraphOutNeighbors u18 x0 x3) (DirGraphOutNeighbors u18 x0 x1)) u1}.
Apply unknownprop_2901ea7bd443f52b9c6f52a2b98052320dc890a2954cf6f766054205821dd6da with x0, x1, x2, ∀ x3 . x3 ∈ DirGraphOutNeighbors u18 x0 x1 ⟶ x0 x3 x2 ⟶ x3 = 4b3fa.. x0 x1 x2 leaving 6 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
The subproof is completed by applying H2.
The subproof is completed by applying H3.
The subproof is completed by applying H4.
Assume H5: 4b3fa.. x0 x1 x2 ∈ binintersect (DirGraphOutNeighbors u18 x0 x2) (DirGraphOutNeighbors u18 x0 x1).
Assume H6: ∀ x3 . x3 ∈ DirGraphOutNeighbors u18 x0 x1 ⟶ x0 x3 x2 ⟶ x3 = 4b3fa.. x0 x1 x2.
The subproof is completed by applying H6.
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