Q.E.D.
Thus it's shown
Q.E.D. is an abbreviation of the Latin *quod erat demonstrandum*, meaning "which was to be demonstrated." It traditionally appears at the end of mathematical proofs to signal the argument is complete.
In casual use, Q.E.D. announces that something has been proven or that a point is settled: He said he'd never show up on time, and look—he's late again. Q.E.D.
Demonstrated logical conclusion
- demonstrationPublic display of opinion
- EuclidFather of geometry
- deductionConclusion from premises
- corollaryLogical natural consequence
axiom · proposition · syllogism · postulate · lemma · inference · validity · soundness
Reasoned case or dispute
- mic dropTriumphant performance-ending gesture
- vindicationClearance of blame
- triumphalismSmug glorification of victory
- smugnessExcessive pride in oneself
flourish · punctuation · clincher · checkmate · case closed · told you so · debate · rebuttal
Quality of being final
- finalityState of conclusive completion
- irrefutabilityImpossible to argue against
- incontrovertibilityCannot be argued against
- undeniabilityCannot be disputed
certitude · definiteness · absoluteness · conviction · assurance · unquestionability · closure · settlement
Extended academic treatise
- thesisAcademic argument requiring defense
- academicRelating to education or theory
- journalRecord of daily events
- publicationIssued written material
citation · footnote · research · monograph · professor · discourse · theoretical · intellectual
theorem
Demonstrated logical conclusion
- demonstrationPublic display of opinion
- EuclidFather of geometry
- deductionConclusion from premises
corollary · axiom · proposition · syllogism · postulate · lemma · inference · validity · soundness · rigor
argument
Reasoned case or dispute
- mic dropTriumphant performance-ending gesture
- vindicationClearance of blame
- triumphalismSmug glorification of victory
smugness · flourish · punctuation · clincher · checkmate · case closed · told you so · debate · rebuttal
conclusiveness
Quality of being final
- finalityState of conclusive completion
- irrefutabilityImpossible to argue against
- incontrovertibilityCannot be argued against
undeniability · certitude · definiteness · absoluteness · conviction · assurance · unquestionability · closure · settlement · resolution
dissertation
Extended academic treatise
- thesisAcademic argument requiring defense
- academicRelating to education or theory
- journalRecord of daily events
publication · citation · footnote · research · monograph · professor · discourse · theoretical · intellectual · bibliography
Q.E.D.unproven
Not yet established
hypothesis · conjecture · disproven · refuted · inconclusive
Q.E.D.allegedly
Claimed but unverified
questionable · speculative · hypothetically · uncertain · tentative
Q.E.D.to be continued
Promise of future episodes
work in progress · pending · open question · under investigation · TBD