My academic interests revolve around a variety of topics in Microeconomic Theory, inlcuding revealed preference theory, monotne comparative statics, theory of large games, and general equilibrium. Below you can find my publications and working papers.
Journal of Economic Theory, 159, pp 311-325 (2015).
For additional results, see the working version of the paper.
Economic Theory, 59(1), pp 201-243 (2015).
Economic Theory, (forthcoming).
Critical cost-efficiency index (or CCEI), proposed in Afriat (1972, 1973) and Varian (1990), is the most commonly used measure of revealed preference violations. We show that this index is equivalent to the just-noticeable difference, i.e., a measure of dissimilarity between alternatives that is sufficient for the agent to tell them apart. (This version: March 2018)
Economic problems often involve an objective function whose value depends partly on exogenous variables and partly on actions which are chosen by an agent. We are interested in the conditions under which the resulting value is a supermodular function of the exogenous variables (after actions have been optimally chosen). Problems of this sort arise in multi-output production, optimization with non-EU models, and dynamic programming. We show that these problems can be effectively tackled through a theory of supermodular correspondences. (This version: July 2017)
The evidence from psychophysics suggest that people are unable to discriminate between alternatives unless the options are significantly different. We provide a method of eliciting consumer preference from observable choices when the agent is incapable of discerning between similar bundles. (This version: June 2017)
See also the Online appendix.
Consider a framework in which subjects are allowed to choose between pairs consisting of a reward and a time-delay at which the prize is delivered. We develop an axiomatic characterisation of time-preference with various forms of discounting, including weakly present-biased, quasi-hyperbolic, and exponential. (This version: June 2015)
What conditions on the set of observations are necessary and sufficient for it to be consistent with a firm choosing inputs to maximize profit, subject to a production function exhibiting production complementarities? In this paper, we develop an axiomatic characterisation of this hypothesis. (This version: September 2014)
Journal of Management and Financial Science, 7(5), March, pp. 7-33 (2012).
National Economy, 9, pp. 31-56 (2011).
"Namely, because the shape of the whole universe is most perfect and, in fact, designed by the wisest creator, nothing in all of the world will occur in which no maximum or minimum rule is somehow shining forth."