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Specifically, we prove an analogue of the \u201cLone Wolf Theorem\u201d of classical matching theory for the Baldwin and Klemperer (Econometrica 87(3):867\u2013932, 2019) model of exchange economies with transferable utility, showing that any agent who does not participate in trade in some competitive equilibrium must receive her autarky payoff in every competitive equilibrium. Our results extend to approximate equilibria and to settings in which utility is only approximately transferable.<\/jats:p>","DOI":"10.1007\/s00355-019-01228-z","type":"journal-article","created":{"date-parts":[[2020,1,11]],"date-time":"2020-01-11T19:02:25Z","timestamp":1578769345000},"page":"215-228","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Lone wolves in competitive equilibria"],"prefix":"10.1007","volume":"55","author":[{"given":"Ravi","family":"Jagadeesan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Scott Duke","family":"Kominers","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ross","family":"Rheingans-Yoo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,1,11]]},"reference":[{"issue":"2","key":"1228_CR1","doi-asserted-by":"crossref","first-page":"364","DOI":"10.1257\/000282805774670167","volume":"95","author":"A Abdulkadiro\u011flu","year":"2005","unstructured":"Abdulkadiro\u011flu A, Pathak PA, Roth AE (2005) The New York City high school match. 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