Rule of Four

E36824

The Rule of Four refers to the system of government established by the Roman emperor Diocletian in which the empire was jointly ruled by two senior emperors (Augusti) and two junior emperors (Caesares).

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AI-generated illustration of Rule of Four

This AI-generated illustration was produced by black-forest-labs/FLUX.2-dev (1024x1024) from a prompt written by openai/gpt-oss-120b from the entity's label + description.

Prompt

Generate an image of the Rule of Four (The Rule of Four refers to the system of government established by the Roman emperor Diocletian in which the empire was jointly ruled by two senior emperors (Augusti) and two junior emperors (Caesares).)

All labels observed (1)

Label Occurrences
Rule of Four canonical 1

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf Roman imperial administrative system ⓘ
system of government ⓘ
administrativeFeature regional military commands ⓘ
separate imperial courts ⓘ
territorial division of authority ⓘ
alsoKnownAs Tetrarchy ⓘ
appliesTo Roman Empire ⓘ
coreIdea collegial rule ⓘ
orderly imperial succession ⓘ
dividesEmpireInto Eastern Roman Empire ⓘ
linked to: Byzantine Empire

Western Roman Empire ⓘ
firstCaesarInEast Galerius ⓘ
firstCaesarInWest Constantius Chlorus ⓘ
firstCoAugustus Maximian ⓘ
firstSeniorEmperor Diocletian ⓘ
followedBy Constantinian dynasty ⓘ
civil wars of the early 4th century ⓘ
geopoliticalContext internal instability of the 3rd century crisis ⓘ
threats on multiple frontiers ⓘ
governanceModel regionalized rule under unified empire ⓘ
shared imperial authority ⓘ
governingPrinciple hierarchical senior-junior relationship ⓘ
power-sharing among four emperors ⓘ
hasComponentOffice Augustus ⓘ
Caesar ⓘ
hasJuniorTitle Caesar ⓘ
hasLanguageOrigin Greek term "tetrarchia" ⓘ
hasNumberOfAugusti 2 ⓘ
hasNumberOfCaesares 2 ⓘ
hasNumberOfRulers 4 ⓘ
hasPurpose defense of multiple frontiers ⓘ
more efficient administration of the Roman Empire ⓘ
stabilization of imperial succession ⓘ
hasSeniorTitle Augustus ⓘ
historicalPeriod Late Roman Empire ⓘ
linked to: Late Antiquity
introducedBy Diocletian ⓘ
legalStatus imperial reform ⓘ
partOf Diocletianic reforms ⓘ
politicalSystemType autocratic monarchy ⓘ
collegial emperorship ⓘ
precededBy principate ⓘ
startTime 293 ⓘ
successionPlan Caesares succeed Augusti ⓘ
timePeriod early 4th century ⓘ
late 3rd century ⓘ

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Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.