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Theoretical Aspectsof Rationality and Knowledge The mission ofthe biannual TARK conferences is to bring together researchers from awide variety of fields including Artificial Intelligence CryptographyDistributed Computing Economics and Game Theory Linguistics Logic Philosophyand Psychology in order to further our understanding of interdisciplinaryissues involving reasoning about rationality and knowledge. Topics of interestinclude but are not limited to semantic models for knowledge for beliefand for uncertainty bounded rationality and resourcebounded reasoningcommonsense epistemic reasoning epistemic logic logics of knowledge andaction formal analysis of games applications of reasoning about knowledgeand other mental states belief revision and the role of knowledge ingeneral information flow. TARK has beeninfluential in building interfaces between the above disciplines and inaccelerating new research trends both through the actual event and thecirculation of its proceedings. Conference Websites TARK XXwill be held July 1416 2025 inDusseldorf Germany TARK XIXheld June 28 until June 30 2023 in Oxford United Kingdom TARK XVIIIheld June 25 until June 27 2021 in Beijing China online TARK XVIIheld 1719 July 2019 in Toulouse France TARKXVIheld July 2426 2017 at University of Liverpool United Kingdom TARKXVheld June 46 2015 at Carnegie Mellon University Pittsburgh United States TARKXIVheld January 79 2013 at The Institute of Mathematical Sciences Chennai India TARKXIIIheld July 1115th 2011 at the University of Groningen TARKXIIheld July 68th 2009 at Stanford University TARKXIheld June 2527th 2007 at Facultes Universitaires SaintLouis TARK Xheld June 1012 2005 at the National University of Singapore TARK IXheld June 2022 2003 in Indiana University USA TARK VIIIheld July 810 2001 at the University of Siena Italy Proceedings TARK I held March 1922nd 1986 in Monterey California TARK II held March 79th 1988 in Monterey California TARK III held March 47th 1990 in Pacific Grove California TARK IV held March 2225th 1992 in Pacific Grove California TARK V held March 1316th 1994 in Pacific Grove California TARK VI held March 1720th 1996 in De Zeeuwse Stromen The Netherlands TARK VII held July 2224th 1998 in Evanston Illinois TARK VIII held July 810th 2001 at the University of Siena Italy TARK IX held June 2022nd 2003 at Indiana University Indiana TARK X held July 1012th 2005 at the National University of Singapore Singapore TARK XI held June 2527th 2007 at Facultes Universitaires SaintLouis Belgium TARK XII held July 68th 2009 at Stanford University California TARK XIII held July 1115th 2011 at the University of Groningen The Netherlands TARK XIV held January 79th 2013 at The Institute of Mathematical Sciences Chennai India TARK XV held June 46th 2015 at Carnegie Mellon University Pittsburgh United States TARK XVI held July 2426 2017 at the University of Liverpool United Kingdom TARK XVII held July 1719 2019 at the Toulouse University Toulouse France TARK XVIII held June 2527 2019 at the Tsinghua University Beijing China online Boardof Directors .