Search for blocks/addresses/...
Proofgold Proof
pf
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.
Assume H0:
setsum
x2
x3
∈
setprod
x0
x1
.
Apply pair_Sigma_E0 with
x0
,
λ x4 .
x1
,
x2
,
x3
.
The subproof is completed by applying H0.
■