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Sigma KEE - Necessity
Necessity(necessity)essential, fatal, fateful, ineluctable, inescapable, inevitable, inevitably, must, necessarily, necessary, necessity, needfully, needs, of_necessity, prerequisite, requirement, requisite, unavoidable, unnecessary, unneeded

appearance as argument number 1
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No TPTP formula. May not be expressible in strict first order. chinese_format.kif 3891-3892
No TPTP formula. May not be expressible in strict first order. Merge.kif 16204-16205
No TPTP formula. May not be expressible in strict first order. Merge.kif 16203-16203 Necessity is an instance of alethic attribute

appearance as argument number 2
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No TPTP formula. May not be expressible in strict first order. domainEnglishFormat.kif 39976-39976
No TPTP formula. May not be expressible in strict first order. domainEnglishFormat.kif 39975-39975
No TPTP formula. May not be expressible in strict first order. domainEnglishFormat.kif 39974-39974

antecedent
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No TPTP formula. May not be expressible in strict first order. Merge.kif 16207-16209 The statement a formula has the modal force of necessity if and only if the statement the formula doesn't have the modal force of possibility
No TPTP formula. May not be expressible in strict first order. Dining.kif 725-748
No TPTP formula. May not be expressible in strict first order. Merge.kif 16211-16213


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