Browsing Interface : Welcome guest : log in
Home |  Graph |  LogLearn |  Editor |  ]  KB:  Language: 
  Formal Language: 



KB Term:  Term intersection
English Word: 

  Certificate

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
-------------------------


(instance Necessity AlethicAttribute) Merge.kif 17761-17761 Necessity is an instance of alethic attribute
(documentation Necessity EnglishLanguage "Attribute that applies to Propositions that are necessary, i.e. true in every possible world.") Merge.kif 17762-17763 Necessity is an instance of alethic attribute

appearance as argument number 2
-------------------------


(termFormat EnglishLanguage Necessity "necessity") domainEnglishFormat.kif 40063-40063
(termFormat ChineseTraditionalLanguage Necessity "必要性") domainEnglishFormat.kif 40064-40064
(termFormat ChineseLanguage Necessity "必要性") domainEnglishFormat.kif 40065-40065

antecedent
-------------------------


(<=>
    (modalAttribute ?FORMULA Necessity)
    (not
        (modalAttribute
            (not ?FORMULA) Possibility)))
Merge.kif 17765-17769 The statement X has the modal force of necessity if and only if the statement X doesn't have the modal force of possibility
(=>
    (modalAttribute ?FORMULA Necessity)
    (modalAttribute ?FORMULA Possibility))
Merge.kif 17771-17773 If the statement X has the modal force of necessity, then the statement X has the modal force of possibility
(=>
    (and
        (instance ?AGENT AutonomousAgent)
        (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 772-795 If X is an instance of agent, Y is a potential customer for X, the statement Z is an instance of reserving and Z ends up at X has the modal force of necessity, probability of there exists W such that W is an instance of reservation, Y reserves W, and X fulfills W provided that X is a customer of Y holds is V, and probability of there doesn't exist U such that U is an instance of reservation, Y reserves U, and X fulfills U provided that X is a customer of Y holds is T, then T is less than V

consequent
-------------------------


(=>
    (instance ?L Longgun)
    (hasPurpose ?L
        (exists (?S ?A)
            (and
                (instance ?S Shooting)
                (instrument ?S ?L)
                (agent ?S ?A)
                (instance ?A Human)
                (holdsDuring
                    (WhenFn ?S)
                    (exists (?G)
                        (and
                            (instance ?G Grabbing)
                            (agent ?G ?A)
                            (patient ?G ?L)
                            (modalAttribute
                                (exists (?H1 ?H2)
                                    (and
                                        (instance ?H1 Hand)
                                        (part ?H1 ?A)
                                        (instance ?H2 Hand)
                                        (part ?H2 ?A)
                                        (not
                                            (equal ?H1 ?H2))
                                        (instrument ?G ?H1)
                                        (instrument ?G ?H2))) Necessity))))))))
Mid-level-ontology.kif 1966-1992 If X is an instance of long gun, then All of the following hold: (1) X has the purpose there exist Y (2) Z such that Y is an instance of shooting (3) X is an instrument for Y (4) Z is an agent of Y (5) Z is an instance of human (6) there exists W such that W is an instance of grabbing (7) Z is an agent of W (8) X is a patient of W (9) the statement there exist V (10) U such that V is an instance of hand (11) V is a part of Z (12) U is an instance of hand (13) U is a part of Z (14) equal V (15) U (16) V is an instrument for W (17) U is an instrument for W has the modal force of necessity holds during the time of existence of Y
(=>
    (instance ?GUN Handgun)
    (hasPurpose ?GUN
        (exists (?MAN ?S ?H ?G ?S)
            (and
                (instance ?MAN Human)
                (instance ?S Shooting)
                (instrument ?S ?GUN)
                (agent ?S ?MAN)
                (instance ?G Grabbing)
                (subProcess ?G ?S)
                (patient ?G ?GUN)
                (agent ?G ?MAN)
                (instrument ?G ?H)
                (instance ?H Hand)
                (part ?H ?MAN)
                (not
                    (modalAttribute
                        (exists (?H2)
                            (and
                                (instance ?H2 Hand)
                                (not
                                    (equal ?H ?H2))
                                (part ?H2 ?MAN)
                                (instrument ?G ?H2))) Necessity))))))
Mid-level-ontology.kif 2045-2069 If X is an instance of hand gun, then All of the following hold: (1) X has the purpose there exist Y, Z,, , W,, , V (2) Z such that Y is an instance of human (3) Z is an instance of shooting (4) X is an instrument for Z (5) Y is an agent of Z (6) V is an instance of grabbing (7) V is a subprocess of Z (8) X is a patient of V (9) Y is an agent of V (10) W is an instrument for V (11) W is an instance of hand (12) W is a part of Y (13) the statement there doesn't exist U such that U is an instance of hand (14) equal W (15) U (16) U is a part of Y (17) U is an instrument for V doesn't have the modal force of necessity
(=>
    (attribute ?ORG Greedy)
    (exists (?OBJ)
        (and
            (instance ?ORG Organism)
            (instance ?OBJ Physical)
            (desires ?ORG
                (possesses ?ORG ?OBJ))
            (not
                (modalAttribute
                    (possesses ?ORG ?OBJ) Necessity)))))
Mid-level-ontology.kif 21732-21740 If greedy is an attribute of X, then there exists Y such that X is an instance of organism, Y is an instance of physical, X desires X possesses Y, and the statement X doesn't possess Y doesn't have the modal force of necessity
(=>
    (instance ?X PartInspection)
    (hasPurpose ?X
        (exists (?O ?P)
            (and
                (instance ?O SelfConnectedObject)
                (patient ?X ?O)
                (instance ?P Proposition)
                (refers ?P ?O)
                (modalAttribute
                    (conforms ?O ?P) Necessity)))))
Economy.kif 2067-2077 If X is an instance of part inspection, then X has the purpose there exist Y, Z such that Y is an instance of self connected object, Y is a patient of X, Z is an instance of proposition, Z includes a reference to Y, and the statement Y conforms to Z has the modal force of necessity
(=>
    (holdsDuring ?T
        (attribute ?H RectalTenesmus))
    (holdsDuring ?T
        (and
            (desires ?H
                (exists (?D)
                    (and
                        (instance ?D Defecation)
                        (agent ?D ?H))))
            (not
                (modalAttribute
                    (exists (?D)
                        (and
                            (instance ?D Defecation)
                            (agent ?D ?H))) Necessity)))))
Medicine.kif 5131-5146 If rectal tenesmus is an attribute of X holds during Y, then X desires there exists Z such that Z is an instance of defecation, X is an agent of Z, the statement there doesn't exist Z such that Z is an instance of defecation, and X is an agent of Z doesn't have the modal force of necessity holds during Y
(=>
    (and
        (instance ?H Human)
        (instance ?A AwardingADegree)
        (instance ?D
            (HonoraryDegreeFn ?FIELDOFSTUDY ?SCHOOL))
        (patient ?A ?D)
        (destination ?A ?H)
        (agent ?A ?SCHOOL)
        (instance ?INTERVAL TimeInterval))
    (and
        (not
            (modalAttribute
                (holdsDuring ?INTERVAL
                    (attends ?S ?SCHOOL)) Necessity))
        (modalAttribute
            (attribute ?H Student) Unlikely)))
LinkedInDegrees.kif 117-132 If All of the following hold: (1) X is an instance of human (2) Y is an instance of awarding a degree (3) Z is an instance of honorary degree W and V (4) Z is a patient of Y (5) Y ends up at X (6) V is an agent of Y (7) U is an instance of timeframe, then the statement V attends T doesn't hold during U doesn't have the modal force of necessity and the statement student is an attribute of X has the modal force of unlikely


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

Show without tree


Sigma web home      Suggested Upper Merged Ontology (SUMO) web home
Sigma version 3.0.0-0a80e6c8 (2026-05-12) is open source software produced by Articulate Software and its partners