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KB:
SUMO
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Formal Language:
OWL
SUO-KIF
TPTP
traditionalLogic
KB Term:
Sigma KEE - EveningFn
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
EveningFn
A
UnaryFunction
that returns the class of
Evening
s of the given
Day
.
Relationships
Instances
Abstract
Properties or qualities as distinguished from any particular embodiment of the properties/qualities in a physical medium. Instances of Abstract can be said to exist in the same sense as mathematical objects such as sets and relations, but they cannot exist at a particular place and time without some physical encoding or embodiment.
BinaryRelation
BinaryRelation
s are relations that are true only of pairs of things.
BinaryRelation
s are represented as slots in frame systems.
Entity
The universal class of individuals. This is the root node of the ontology.
Function
A
Function
is a term-forming
Relation
that maps from a n-tuple of arguments to a range and that associates this n-tuple with at most one range element. Note that the range is a
Class
, and each element of the range is an instance of the
Class
.
可繼承的關係
The class of
Relation
s whose properties can be inherited downward in the class hierarchy via the
subrelation
Predicate
.
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.
Relation
The
Class
of relations. There are two kinds of
Relation
:
Predicate
and
Function
.
Predicate
s and
Function
s both denote sets of ordered n-tuples. The difference between these two
Class
es is that
Predicate
s cover formula-forming operators, while
Function
s cover term-forming operators.
SingleValuedRelation
A
Relation
is a
SingleValuedRelation
just in case an assignment of values to every argument position except the last one determines at most one assignment for the last argument position. Note that not all
SingleValuedRelation
s are
TotalValuedRelation
s.
TemporalRelation
The
Class
of temporal
Relation
s. This
Class
includes notions of (temporal) topology of intervals, (temporal) schemata, and (temporal) extension.
UnaryFunction
The
Class
of
Function
s that require a single argument.
Belongs to Class
Entity
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Sigma version 3.0 is
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produced by
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and its partners