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414b7b1e
Commit
414b7b1e
authored
Nov 29, 2017
by
Robbert Krebbers
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Another form of associativity for `opM`.
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theories/algebra/cmra.v
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theories/algebra/cmra.v
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414b7b1e
...
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@@ -1333,6 +1333,9 @@ Section option.
Lemma
op_is_Some
mx
my
:
is_Some
(
mx
⋅
my
)
↔
is_Some
mx
∨
is_Some
my
.
Proof
.
rewrite
-!
not_eq_None_Some
op_None
.
destruct
mx
,
my
;
naive_solver
.
Qed
.
Lemma
cmra_opM_assoc'
x
my
mz
:
x
⋅
?
my
⋅
?
mz
≡
x
⋅
?
(
my
⋅
mz
).
Proof
.
destruct
my
,
mz
;
by
rewrite
/=
-
?assoc
.
Qed
.
Global
Instance
Some_core_id
(
x
:
A
)
:
CoreId
x
→
CoreId
(
Some
x
).
Proof
.
by
constructor
.
Qed
.
Global
Instance
option_core_id
(
mx
:
option
A
)
:
...
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