Aumann's agreement theorem

proper noun

A theorem stating that two Bayesian agents with the same prior beliefs cannot "agree to disagree" about the probability of an event if their individual beliefs are common knowledge.

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Meanings

proper noun
  1. human sciencesA theorem stating that two Bayesian agents with the same prior beliefs cannot "agree to disagree" about the probability of an event if their individual beliefs are common knowledge.

Origin

Proved by Robert Aumann in a 1976 paper.

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Cite this entry
APA

Aumann's agreement theorem. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Aumann's%20agreement%20theorem

MLA

“Aumann's agreement theorem.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Aumann's%20agreement%20theorem. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Aumann's agreement theorem,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Aumann's%20agreement%20theorem.

Source: Aumann's agreement theorem on Wiktionary, CC BY-SA 4.0.