Simple Browser : Welcome guest : log in
Home |  Graph |  ]  KB:  Language:   

Formal Language: 



Sigma KEE - BinaryRelation
KB Term: 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
binary relation
BinaryRelations are relations that are true only of pairs of things. BinaryRelations are represented as slots in frame systems.
Relationships      
Parents inheritable relation The class of Relations whose properties can be inherited downward in the class hierarchy via the subrelation Predicate.
  relation The Class of relations. There are two kinds of Relation: Predicate and Function. Predicates and Functions both denote sets of ordered n-tuples. The difference between these two Classes is that Predicates cover formula-forming operators, while Functions cover term-forming operators.
Children antisymmetric relationBinaryRelation ?REL is an AntisymmetricRelation if for distinct ?INST1 and ?INST2, (?REL ?INST1 ?INST2) implies not (?REL ?INST2 ?INST1). In other words, for all ?INST1 and ?INST2, (?REL ?INST1 ?INST2) and (?REL ?INST2 ?INST1) imply that ?INST1 and ?INST2 are identical. Note that it is possible for an AntisymmetricRelation to be a ReflexiveRelation.
 binary predicateA Predicate relating two items - its valence is two.
 economic relationA class of Relations which are used to specify various economic measures, e.g. the GDP, the consumer price index, and the trade deficit.
 intransitive relationA BinaryRelation ?REL is intransitive only if (?REL ?INST1 ?INST2) and (?REL ?INST2 ?INST3) imply not (?REL ?INST1 ?INST3), for all ?INST1, ?INST2, and ?INST3.
 irreflexive relationRelation ?REL is irreflexive iff (?REL ?INST ?INST) holds for no value of ?INST.
 reflexive relationRelation ?REL is reflexive iff (?REL ?INST ?INST) for all ?INST.
 symmetric relationA BinaryRelation ?REL is symmetric just iff (?REL ?INST1 ?INST2) imples (?REL ?INST2 ?INST1), for all ?INST1 and ?INST2.
 transitive relationA BinaryRelation ?REL is transitive if (?REL ?INST1 ?INST2) and (?REL ?INST2 ?INST3) imply (?REL ?INST1 ?INST3), for all ?INST1, ?INST2, and ?INST3.
 trichotomizing relationA BinaryRelation ?REL is a TrichotomizingRelation just in case all ordered pairs consisting of distinct individuals are elements of ?REL.
 unary functionThe Class of Functions that require a single argument.
Instancesangle of fireangleOfFire is a relation linking a Shooting event with the angle between the Horizontal plane and the axial direction of the barrel of gun, mortar or heavy artillery. [Wikipedia]
 catalystA relation between a ChemicalProcess and a Substance that acts to accelerate or enable the ChemicalProcess.
 device OSInstances of a Computer are intended to run versions of the given OperatingSystem. Note that this does not cover cases of a device that is hacked or subject to Jailbreaking in order to run a given OS that was not intended for the device.
 hardware type(hardwareType ?TYPE ?COMPUTER) means that TYPE represents the computer vendor model name, as well as the version of the product.
 has account(hasAccount ?User ?Account) holds if ?User is assigned the UserAccount ?Account.
 recovery keyA code that will allow a user to recover his or her password if the password is forgotten. It is essentially a password for the password.
 software versionsoftwareVersion is a VersionAttribute to the Proposition, ComputerProgram.
 suffersThe opposite of benefits. The Agent does not want the action to occur.


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