Agreeing to Disagree. Aumann, R. J. The Annals of Statistics, 4(6):1236–1239, November, 1976. Cited by 2035
Agreeing to Disagree [link]Paper  doi  abstract   bibtex   
Two people, 1 and 2, are said to have common knowledge of an event E if both know it, 1 knows that 2 knows it, 2 knows that 1 knows is, 1 knows that 2 knows that 1 knows it, and so on. THEOREM. If two people have the same priors, and their posteriors for an event A are common knowledge, then these posteriors are equal.
@article{aumann_agreeing_1976,
	title = {Agreeing to {Disagree}},
	volume = {4},
	copyright = {Copyright © 1976 Institute of Mathematical Statistics},
	issn = {0090-5364},
	url = {http://www.jstor.org/stable/2958591},
	doi = {10.2307/2958591},
	abstract = {Two people, 1 and 2, are said to have common knowledge of an event E if both know it, 1 knows that 2 knows it, 2 knows that 1 knows is, 1 knows that 2 knows that 1 knows it, and so on. THEOREM. If two people have the same priors, and their posteriors for an event A are common knowledge, then these posteriors are equal.},
	number = {6},
	urldate = {2013-07-31},
	journal = {The Annals of Statistics},
	author = {Aumann, Robert J.},
	month = nov,
	year = {1976},
	note = {Cited by 2035},
	pages = {1236--1239},
}

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