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Proofgold Proof

pf
Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Assume H0: setsum 1 x2setsum x0 x1.
Apply pairE with x0, x1, setsum 1 x2, x2x1 leaving 3 subgoals.
The subproof is completed by applying H0.
Apply Inj0_pair_0_eq with λ x3 x4 : ι → ι . (∃ x5 . and (x5x0) (setsum 1 x2 = x3 x5))x2x1.
Apply Inj1_pair_1_eq with λ x3 x4 : ι → ι . (∃ x5 . and (x5x0) (x3 x2 = Inj0 x5))x2x1.
Assume H1: ∃ x3 . and (x3x0) (Inj1 x2 = Inj0 x3).
Apply FalseE with x2x1.
Apply exandE_i with λ x3 . x3x0, λ x3 . Inj1 x2 = Inj0 x3, False leaving 2 subgoals.
The subproof is completed by applying H1.
Let x3 of type ι be given.
Assume H2: x3x0.
Assume H3: Inj1 x2 = Inj0 x3.
Apply Inj0_Inj1_neq with x3, x2.
Let x4 of type ιιο be given.
The subproof is completed by applying H3 with λ x5 x6 . x4 x6 x5.
Apply Inj1_pair_1_eq with λ x3 x4 : ι → ι . (∃ x5 . and (x5x1) (x3 x2 = x3 x5))x2x1.
Assume H1: ∃ x3 . and (x3x1) (Inj1 x2 = Inj1 x3).
Apply exandE_i with λ x3 . x3x1, λ x3 . Inj1 x2 = Inj1 x3, x2x1 leaving 2 subgoals.
The subproof is completed by applying H1.
Let x3 of type ι be given.
Assume H2: x3x1.
Assume H3: Inj1 x2 = Inj1 x3.
Apply Inj1_inj with x2, x3, λ x4 x5 . x5x1 leaving 2 subgoals.
The subproof is completed by applying H3.
The subproof is completed by applying H2.