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refs/heads/upstream/expose-array-back
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issue7826a.lean
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example
(
a b
:
Nat
)
(
h
:
a
=
b
):
(
let
_
:
id
Bool
:=
true
;
a
)
=
(
let
_
:
Bool
:=
true
;
b
)
:=
by
simp
-
zeta
-
zetaDelta
[
h
]