1
2
3
sigma
expr
with
i
in
a..b where
i:
Identifier
,a:ZZ,b:ZZ,expr:
Expression
sigma
expr
with
i
1
,…,i
n
in
r
1
,…,r
n
where
i
j
:
Identifier
,r
j
:
List
|
Vector
|
Range
,expr:
Expression
sigma
expr
with
i
1
,…,i
n
in
r
1
,…,r
n
where
p where
i
j
:
Identifier
,r
j
:
List
|
Vector
|
Range
,expr:
Expression
,expr:
Expression
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