PredecessorFn - Sigma Knowledge base Browser

appearance as argument number 1

(documentation PredecessorFn ChineseLanguage "这是一个 UnaryFunction，它把一个Integer 和它的前驱联系起来，例如：5的前驱是4。")	Merge.kif 5430-5431
(documentation PredecessorFn EnglishLanguage "A UnaryFunction that maps an Integer to its predecessor, e.g. the predecessor of 5 is 4.")	Merge.kif 5428-5429
(domain PredecessorFn 1 Integer)	Merge.kif 5426-5426	The number 1 argument of predecessor is an instance of integer
(instance PredecessorFn TotalValuedRelation)	Merge.kif 5425-5425	Predecessor is an instance of total valued relation
(instance PredecessorFn UnaryFunction)	Merge.kif 5424-5424	Predecessor is an instance of unary function
(range PredecessorFn Integer)	Merge.kif 5427-5427	The range of predecessor is an instance of integer

appearance as argument number 2

(format ChineseLanguage PredecessorFn "(%1+2)")	chinese_format.kif 736-736
(format EnglishLanguage PredecessorFn "(%1+2)")	english_format.kif 452-452
(termFormat ChineseLanguage PredecessorFn "前继数函数")	chinese_format.kif 737-737	"前继数函数" is the printable form of predecessor in ChineseLanguage
(termFormat EnglishLanguage PredecessorFn "predecessor")	domainEnglishFormat.kif 8282-8282	"predecessor" is the printable form of predecessor in english language

antecedent

(=>
    (equal
        (PredecessorFn ?INT1)
        (PredecessorFn ?INT2))
    (equal ?INT1 ?INT2))

Merge.kif 5433-5435

consequent

(=> (instance ?INT Integer) (equal ?INT (PredecessorFn (SuccessorFn ?INT))))	Merge.kif 5420-5422	If an integer is an instance of integer, then the integer is equal to ((the integer+1)+2)
(=> (instance ?INT Integer) (equal ?INT (SuccessorFn (PredecessorFn ?INT))))	Merge.kif 5416-5418	If an integer is an instance of integer, then the integer is equal to ((the integer+2)+1)
(=> (instance ?INT Integer) (greaterThan ?INT (PredecessorFn ?INT)))	Merge.kif 5437-5439	If an integer is an instance of integer, then the integer is greater than (the integer+2)

statement

(forall (?NUMBER)
    (equal
        (PredecessorFn ?NUMBER)
        (SubtractionFn ?NUMBER 1)))

Merge.kif 4887-4888