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Proofgold Proposition
exactly1of2
=
λ x1 x2 : ο .
or
(
and
x1
(
not
x2
)
)
(
and
(
not
x1
)
x2
)
type
prop
theory
hf axiom
name
-
proof
-
Megalodon
exactly1of2_def
proofgold address
-
creator
owner
term root
205df..