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github.com
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leanprover
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lean4
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refs/heads/upstream/floatbits
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tests
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lean
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1763.lean.expected.out
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theorem ex1
:
∀
{
p q
:
Prop
},
(
p
↔
q
)
→
P q
→
P p
:=
fun
{
p q
}
h h
' => Eq.mpr (id (propext (P_congr p q h))) h'
theorem ex2
:
∀
{
p q
:
Prop
},
p
=
q
→
P q
→
P p
:=
fun
{
p q
}
h h
' => Eq.mpr (id (propext (P_congr p q (Iff.of_eq h)))) h'