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Sigma KEE  PartialValuedRelation
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PartialValuedRelation
A
Relation
is a
PartialValuedRelation
just in case it is not a
TotalValuedRelation
, i.e. just in case assigning values to every argument position except the last one does not necessarily mean that there is a value assignment for the last argument position. Note that, if a
Relation
is both a
PartialValuedRelation
and a
SingleValuedRelation
, then it is a partial function.
Relationships
Parents
Relation
The
Class
of relations. There are two kinds of
Relation
:
Predicate
and
Function
.
Predicate
s and
Function
s both denote sets of ordered ntuples. The difference between these two
Class
es is that
Predicate
s cover formulaforming operators, while
Function
s cover termforming operators.
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Sigma version 3.0 is
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