| Necessity | |
| appearance as argument number 1 |
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| (documentation Necessity ChineseLanguage "这是指应用于必须出现 Proposition 的属性，即是 它在所有的世界上都会实现。") | Merge.kif 22178-22179 | |
| (documentation Necessity EnglishLanguage "Attribute that applies to Propositions that are necessary, i.e. true in every possible world.") | Merge.kif 22176-22177 | |
| (instance Necessity AlethicAttribute) | Merge.kif 22175-22175 |
| appearance as argument number 2 |
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| (termFormat ChineseLanguage Necessity "必要性") | domainEnglishFormat.kif 39979-39979 | |
| (termFormat ChineseTraditionalLanguage Necessity "必要性") | domainEnglishFormat.kif 39978-39978 | |
| (termFormat EnglishLanguage Necessity "necessity") | domainEnglishFormat.kif 39977-39977 |
| antecedent |
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| (<=> (modalAttribute ?FORMULA Necessity) (not (modalAttribute (not ?FORMULA) Possibility))) |
Merge.kif 22181-22183 | |
| (=> (and (instance ?AGENT Agent) (potentialCustomer ?CUST ?AGENT) (modalAttribute (and (instance ?R Reserving) (destination ?R ?AGENT)) Necessity) (conditionalProbability (exists (?RES1) (and (instance ?RES1 Reservation) (reservingEntity ?CUST ?RES1) (fulfillingEntity ?AGENT ?RES1))) (customer ?CUST ?AGENT) ?NUM1) (conditionalProbability (not (exists (?RES2) (and (instance ?RES2 Reservation) (reservingEntity ?CUST ?RES2) (fulfillingEntity ?AGENT ?RES2)))) (customer ?CUST ?AGENT) ?NUM2)) (lessThan ?NUM2 ?NUM1)) |
Dining.kif 729-752 | |
| (=> (modalAttribute ?FORMULA Necessity) (modalAttribute ?FORMULA Possibility)) |
Merge.kif 22185-22187 |
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