ReverseFn - Sigma Knowledge base Browser

appearance as argument number 1

(documentation ReverseFn EnglishLanguage "The reverse of a string.")	Media.kif 3046-3046
(domain ReverseFn 1 SymbolicString)	Media.kif 3044-3044	The number 1 argument of the reverse of is an instance of symbolic string
(instance ReverseFn UnaryFunction)	Media.kif 3043-3043	The reverse of is an instance of unary function
(range ReverseFn SymbolicString)	Media.kif 3045-3045	The range of the reverse of is an instance of symbolic string

appearance as argument number 2

(format EnglishLanguage ReverseFn "the reverse of %1")	Media.kif 3048-3048
(termFormat EnglishLanguage ReverseFn "the reverse of")	Media.kif 3047-3047

antecedent

(=>
    (and
        (equal ?OUT
            (ReverseFn ?IN))
        (equal ?LEN
            (StringLengthFn ?IN))
        (greaterThan ?LEN 1)
        (greaterThan ?N 0)
        (lessThan ?N ?LEN)
        (equal ?PIVOT
            (CeilingFn
                (DivisionFn
                    (SubtractionFn ?LEN 1) 2)))
        (equal ?NEW
            (AdditionFn
                (SubtractionFn ?PIVOT ?N) ?PIVOT))
        (equal ?S
            (SubstringFn ?IN ?N
                (AdditionFn 1 ?N))))
    (equal ?S
        (SubstringFn ?OUT ?NEW
            (AdditionFn 1 ?NEW))))

Media.kif 3050-3071

If a symbolic string is equal to the reverse of another symbolic string and a nonnegative integer is equal to the length of the other symbolic string and the nonnegative integer is greater than 1 and another nonnegative integer is greater than 0 and the other nonnegative integer is less than the nonnegative integer and an integer is equal to the ceiling of (the nonnegative integer and 1) and 2 and the other nonnegative integerEW is equal to ((the integer and the other nonnegative integer) and the integer) and a third symbolic string is equal to the sub-string of the other symbolic string from the other nonnegative integer to (1 and the other nonnegative integer),
then the third symbolic string is equal to the sub-string of the symbolic string from the other nonnegative integerEW to (1 and the other nonnegative integerEW)

consequent

(=>
    (and
        (instance ?WORD Palindrome)
        (spellingInLanguage ?LANGUAGE ?WORD ?SYMBOLICSTRING))
    (equal ?SYMBOLICSTRING
        (ReverseFn ?SYMBOLICSTRING)))

Media.kif 3078-3083

If a word is an instance of palindrome and the word in Language a language is spelt as a symbolic string.,
then the language is equal to the reverse of the language

Show full definition with tree view
Show simplified definition (without tree view)
Show simplified definition (with tree view)

Sigma web home Suggested Upper Merged Ontology (SUMO) web home
Sigma version 3.0 is open source software produced by Articulate Software and its partners

KB Term:			Term intersection

English Word: