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CNRS Research Professor
Economics - Decision Science
Member of CNRS-GREGHEC Research Group
After completing studies in mathematics, logic and philosophy, for the last few years Brian Hill has been working mainly in the field of decision theory.
After a period as Assistant Professor at HEC, he is now a CNRS research fellow attached to the GREGHEC laboratory and Affliliate Professor at HEC, where he teaches courses on decision theory, logic and philosophy. In logic and philosophy, he has worked on conditionals, on the dynamics of belief and preference, on awareness, on induction and on vagueness; in decision theory, his interests have included the relationship between decision making and changes in attitudes (beliefs and preferences), the role of conditionals in decision and state-dependent utilities. Much of his current research focuses on issues pertaining to the treatment and consequences of uncertainty in decision making, and in particular on the role of confidence and the analysis of indecisiveness.
"Incomplete preferences and confidence", Journal of Mathematical Economics, aout 2016, vol. 65, pp. 83–10.
"Robust Social Decisions", American Economic Review, September 2016, vol. 106, n° 9, pp. 2407-2425 (in coll. with E. DANAN, T. GAJDOS, J.-M. TALLON).
"Common knowledge: a finitary calculus with a syntactic cut-elimination procedure", Logique et Analyse, June 2015, vol. 58, n° 230, pp. 279-306 (in coll. with F. POGGIOLESI).
"Representation theorems and the semantics of decision-theoretic concepts", Journal of Economic Methodology, 2015, vol. 22, n° 3, pp. 292-311 (in coll. with M. COZIC).
"Awareness and equilibrium", Synthese, March 2013, vol. 190, n° 5, pp. 851-869.
"Confidence and decision", Games and Economic Behavior, November 2013, vol. 82, pp. 675-692.
"Confidence in preferences", Social Choice and Welfare, July 2012, vol. 39, n° 2/3, pp. 273-302.
"Defending the Ramsey Test: What is wrong with Preservation?", Mind, January 2012, vol. 121, n° 481, pp. 131-146.
"A Contraction-free and Cut-free Sequent Calculus for Propositional Dynamic Logic", Studia Logica, 2010, vol. 94, n° 1, pp. 1-26 (in coll. with F. Poggiolesi).
"An additively separable representation in the Savage framework", Journal of Economic Theory, September 2010, vol. 145, n° 5, pp. 2044-2054.
"Awareness Dynamics", Journal of Philosophical Logics, April 2010, vol. 39, n° 2, pp. 113-137.
"Le problème dynamique de l'induction", Dialogue: Canadian Philosophical Review/Revue canadienne de philosophie, December 2009, vol. 48, n° 4, pp. 701-715.
"Living without state-independence of utilities", Theory and Decision, October 2009, vol. 67, n° 4, pp. 405-433.
"Logic of change, Change of logic", Synthese, November 2009, vol. 171, n° 2, pp. 227-234 (in coll. with O. Majer, H. van Ditmarsch).
"When is there state independence?", Journal of Economic Theory, May 2009, vol. 144, n° 3, pp. 1119-1134.
"Towards a "Sophisticated" Model of Belief Dynamics. Part I: The General Framework", Studia Logica, June 2008, vol. 89, n° 1, pp. 1-29.
"Towards a "Sophisticated" Model of Belief Dynamics. Part II: Belief Revision.", Studia Logica, August 2008, vol. 89, n° 3, pp. 291-323.
Chapters in Edited Books
"Fiction, Counterfactuals: the challenge for logic", in Unity of Science. Vol. II: Special Sciences, S. Rahman, O. Pombo (Eds), Springer, 2012, 277-299.
"Three Analyses of Sour Grapes", in Preference Change: Approaches from Philosophy, Economics and Psychology, T. Grüne-Yanoff, S. O. Hansson (eds), Springer, 2009.
"Climate Change Assessments: Confidence, Probability and Decision", Cahier de Recherche du Groupe HEC, 2016.
"Uncertainty Aversion, Multi Utility Representations and State Independence of Utility", Cahier de Recherche du Groupe HEC, 2015.
"Aggregating Tastes, Beliefs, and Attitudes Under Uncertainty", Cahier de Recherche du Groupe HEC, 2014 (in coll. with E. DANAN, T. GAJDOS, J.-M. TALLON).
"Confidence as a Source of Deferral", Cahier de Recherche du Groupe HEC, 2014.
"Incomplete Preferences and Confidence", Cahier de Recherche du Groupe HEC, 2014.
"Risk versus Ambiguity and International Security Design", Cahier de Recherche du Groupe HEC, 2014 (in coll. with T. K. MICHALSKI).
"Unanimity and the aggregation of multiple prior opinions", Cahier de Recherche du Groupe HEC, 2012.
"Deferral, incomplete preferences and confidence", Cahier de Recherche du Groupe HEC, 2011.
"Awareness and Equilibrium", Cahier de Recherche du Groupe HEC, 2010.
"Confidence and ambiguity", Cahier de Recherche du Groupe HEC, 2009.
"Confidence in preferences", Cahier de Recherche du Groupe HEC, 2009.
"An additively separable representation in the Savage framework", Cahier de Recherche du Groupe HEC, 2007.
"Dynamic Awareness", Cahier de Recherche du Groupe HEC, 2007.
"Living without state-independence of utilities", Cahier de Recherche du Groupe HEC, 2007.
"The (topo)logic of vagueness", Cahier de Recherche du Groupe HEC, 2007.
"Three Analyses of Sour Grapes", Cahier de Recherche du Groupe HEC, 2007.
"Towards a "sophisticated" model of belief dynamics", Cahier de Recherche du Groupe HEC, 2007.
"When is there state independence", Cahier de Recherche du Groupe HEC, 2007.
Employment Date: 2007
Main courses taught at HEC
« Méthodes Logiques et Argumentatives »
« Making Better Decisions »
« Rational Choice »
« Méthodes d'Analyses Philosophiques »
2015 Habilitation à diriger des recherches (Qualified Research Supervisor), Université de Paris I-Panthéon Sorbonne, France.
2006 Doctorat de Philosophie (Ph.D. in Philosophy), Université de Paris I-Panthéon Sorbonne, France.
2005 Masters de Mathématiques et Informatique, « Logique Mathématique et Fondements de l'Informatique », Université Paris Diderot, France.
2003 DEA de Philosophie, « Histoire et Philosophie des Sciences », Université de Paris I-Panthéon Sorbonne, France.
2002 Cambridge Advanced Certificate in Mathematics , University of Cambridge, United Kingdom.
2001 B.A. in Mathematics, University of Cambridge, United Kingdom.
Academic responsibilities at HEC
2007- CNRS Research Professor, Economics - Decision Science.
2007- Member, GREGHEC (CNRS).
2006-2007 Post-doctoral researcher, GREGHEC.
Membership in Academic or Professional Organisation
Association Française de Sciences Economiques (A.F.S.E.).
Reviewer, The Journal of Economic Theory, Review of Economic Studies, The Journal of Mathematical Economics, The Journal of Mathematical Psychology, The International Journal of Approximate Reasoning, Theory and Decision, Economics and Philosophy, Oeconomia, Games, Erkenntis, Studia Logica, Journal of Philosophical Logic, Synthese, Theoria, The Journal of Logic and Computation, Econometrica, Review of Economic Studies.
Co-editor, Logic of Change, Change of Logic, Special issue of Synthese, November 2009.
Member of scientific committee of RUD 2010 (Risk, Uncertainty and Decision 2010 Conference), Paris, June 2010. (http://sites.google.com/site/rudparis2010/home.
Reviewer, Congrès de l'Association Francaise des Sciences Economiques.
Member of the editorial board of Oeconomia, since October 2010.
Book Review Editor for Oeconomia: April 2012 - present.
octobre 2011- Member of programme committee of LORI-III (Third International Workshop on Logic, Rationality and Interaction), Guangzhou.
juin 2011- Member of scientific committee of RUD11 (Risk, Uncertainty and Decision), Torino.
Co-organiser of the Prague International Colloquium « Logic of Change, Change of Logic », September 2008, Prague, Czech Republic.
Co-organiser of the seminar « Décision et Rationalité », GREGHEC et IHPST, 2007.
Co-organiser of D-TEA, HEC Paris, April 2009, June 2010, June 2011.
Workshop From Social Choice Theory to Logical Aggregation Theory (GREGHEC, LAMSADE, CERSES; main organizers from GREGHEC: Philippe Mongin and Brian Hill).
Member of scientific committee of RUD12 (Risk, Uncertainty and Decision), Evanston.
Co-organiser of Paris Workshop in Incomplete Preferences, March 2011.
Four-day internal seminar at Aussois (main organiser : Philippe MONGIN).
Workshop on decision making under uncertainty and beyond.
Member, Scientific Committee: ParisTech - Journal of Economic Theory Conference on Inequality and Risk.
Awards & Honors
2014 Médaille de bronze du CNRS.
Decision theory: confidence; state-dependent utilities.
Logic: logic of awareness; logics of belief and preference change.
Foundations of economics: role of hypothetical factors in decision-making.
Philosophy: conditionals, induction, vagueness.