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KB:
SUMO
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traditionalLogic
KB Term:
Sigma KEE - LogicalOperator
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邏輯運算符
This
Class
comprises all of the logical operators (viz. 'and', 'or', 'not', '=>', and '<=>').
Relationships
Parents
Predicate
A
Predicate
is a sentence-forming
Relation
. Each tuple in the
Relation
is a finite, ordered sequence of objects. The fact that a particular tuple is an element of a
Predicate
is denoted by '(*predicate* arg_1 arg_2 .. arg_n)', where the arg_i are the objects so related. In the case of
BinaryPredicate
s, the fact can be read as `arg_1 is *predicate* arg_2' or `a *predicate* of arg_1 is arg_2'.
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Sigma version 3.0 is
open source software
produced by
Articulate Software
and its partners