i have been lucky to work with an amazing group of coauthors over the years. this page is devoted some of them. when possible, i include links to each of their webpages, mention the problems in economics on which they work, and provide pictures of each of them. Just scroll down to see different coauthors.
len mirman has been the biggest influence on my work in economics, and the greatest economist i have ever known. i met len while i was in grad school at purdue when he was giving a seminar, and i asked him a few questions about his talk over a beer or three at harry's chocolate shop, a wonderful place to drink in downtown west lafayette. as expected, he has absolutely no recollection of this meeting.
i met len again in spring 1997, when he was visiting the economics department at asu. it was during that visit this time we started to work together on various projects pertaining to characterizing recursive equilibria in various dynamic general equilibrium models, as well some problems in dynamic games. since that time, i have worked with him on numerous projects, all of them coauthored with manjira datta and/or olivier morand.
len made seminal contributions in numerous fields of economics, including work in such diverse areas as stochastic growth, risk aversion, learning and experimentation, dynamic games, noisy traders and financial economics, envelope theorems, lattice programming, among other topics. simply put, in my view, he deserved a nobel prize.
i always looked forward to talking with len about anything actually, usually over a nice bottle of virginia merlot (even when we are in paris), w/ all our conversations typically ending with each of us quoting long passages from the growing body of written work by his hero, and fellow virginian, thomas jefferson.
len mirman passed away in the september of 2017. his work in economics remains influential, as it always will. so many seminal contributions. meeting len changed not only my work, but my life. he was just a remarkable economist; but most importantly, he was a remarkable man..
i met manjira datta when we both joined the economics department at arizona state. after graduating from cornell, she worked at c.o.r.e. in belgium and university of saskatchewan before joining the economics department at asu. her research focuses onvarious topics in dynamic general equilibrium theory, including models of international trade, externalities and price dynamics, and recursive equilibrium theory, as well aseconomic models of learning and experimentation, dynamic games, and resource economics. we started working together on recursive equilibrium theory (along w/ len mirman and olivier morand) also twenty years ago
i am sure manjira has that default webpage that asu gives everyone when they join the faculty at the new american university (google the term), but right now, i am unable to locate this gem.
i met lukasz wozny in 2006, when he visited arizona state as a fulbright scholar for the academic year of 2006-2007, and i have worked with him on numerous projects ever since that time. lukasz has endless interesting ideas, knows a good bottle of wine or three to accompany any meal, and appreciates all the good things of life..... literature, painting, history, and especially great music, etc etc. etc.
right now, lukasz is working on many interesting things, including dynamic contracting problems with temptation preferences, stochastic and large games, recursive equilibrium theory, models of human capital evolution, stochastic models of production with endogenous risk. he is currently living in warsaw, and is a member of the warsaw school of economics.
lukasz visits the economics department at asu fairly regularly, last coming in march of 2015. i believe he will be visiting tempe again in 2018.
click on the link to lukasz' webpage located immediately after his pictures to see a description of his current work.
l ran into lukasz balbus around 2008 or so at a conference on dynamic games in wroclaw poland. we started working together on a number of projects on stochastic games a year or so later (along w/ lukasz wozny). since this time, we have continued to work on a number of additional projects. actually, most of what i know about stochastic games comes from conversations with him, lukasz wozny, amanda friedenberg (a colleague of mine at asu), rabah amir, and studying the work of lukasz' advisor, andrzej nowak. lukasz still works andrzej, and they have a number of very interesting papers on stochastic games involving intergenerational altruism as well as resources conflicts/fishwars. lukasz is a member of the institute of mathematics at the university of zielona gora in poland. if i have a question about mathematics, lukasz is the first i ask.....
lukasz visited arizona last in february of 2014....rumor is he will visit again in the spring 2018. i just hope he does not get lost in downtown tempe this time....
lukasz now does seem to have a webpage, but at this stage, it remains of little use. click here for lukasz webpage.
I met john stachurski in paris in the summer of 2003 at a conference on "irregular economic growth". although i never really understood what this conference was about, it did give us time to discuss matters of mutual interest over lots of good food, and even more good wine. over the years since then, we had spent a great deal of time discussing various topics in stochastic processes, nonlinear operator theory, numerical methods (fyi: for all u macro dudes, this is actually a serious branch of mathematics), the cosmic world of meyn and tweedie, cuisines of theworld, and most importantly, the history of american roots music w/ a special emphasis on delta blues and all things rl bunside and fat possum. what u might not know about johnis he has spent a good deal of his voluminous intellectual capital over the last decade becoming a expert of world renown doing extensive field studies of the finer details of one of the greatest adult beverage to ever grace the shelves of all the finer liquor establishments all across the great nation of texas, lone star beer.
along w/ takashi kamihigashi, over the last decade john has pretty much reinvented our understanding of the stability theory of monotone markov processes on unbounded state spaces. further, he has also done important work in a wide array of other areas in economics, including stochastic processes as applied to economic dynamics, nonclassical stochastic growth theory, numerical dynamic programming, simulation methods, models of commodities/pricing, and trade theory, among other topics. actually, if john writes a paper, i read it, no matter what the subject matter. to be honest, the only major character flaw of john's of which i am aware is his love of econometrics.
john has also written the wonderful book "economic dynamics: theory and computation" published in 2009 by mit press, a book i use as a standard reference in all of my phd courses involving dynamics. unfortunately, he has also written a book on econometrics. both books are available at all ofyour neighborhood amazon bookstores the live on smartphones around the world. finally, along w/ tom sargent, john has put together an marvelous webpage on quantitative economics. you can find that webpage here.
john is member of the economics department at australian national university. to read more about john and his work, please click on this link to go to his webpage
i met suchismita tarafdar when she first visited asu for a campus visit in 2004. during that visit, when manjira datta and i were driving her showing her the eternal beauty that is scottsdale, az, we promptly were the victim of a hit and run accident. i am sure this made a great first impression on her, and suchismita decided to join our department in 2005. suchismita's thesis studied developing new envelope theorems for nonconvex optimization problems with occasionally binding constraints. she is currently a member of faculty at shiv nadar university dadri, uttar pradesh, just outside new delhi. i simply cannot tell you how much she has taught me about optimization theory, generalized differentiability, nonlinear programming, and its application to characterizing optimal solutions in both static and dynamic optimization problems... as well as the importance of water in our daily lives (including mine). she is currently working on a new project w/ olivier morand and i on developing new methods for characterizing generalized markov equilibria in dynamic economies. suchismita has a webpage that she never seems to update apparently. click here for suchismita's webpage.
pawel dziewulski was a student at the warsaw school of economics when I met him also at this conference on dynamic games in wroclaw around 2008. at the time, he was already doing some interesting things in his masters thesis which he was writing under the direction of lukasz wozny. he is now career developement school at oxford, and he is working on a number of new projects in dynamic general equilibrium theory, revealed preference, models of complementarities, large stochastic games, dynamic models with limited commitment, optimal stopping problems, general equilibrium in models with time-dependent preferences, among many other things. his work is extremely interesting. i have had the pleasure ofworking with him (along with lukasz balbus and lukasz wozny) on some papers on large games with strategic complementarities.
i am hoping to get pawel to visit arizona in the near future, but currently he is too enamored with being an english gentleman.
the link to pawel's webpage is below his picture.
francesco is currently working on estimating models of early childhood human capital accumulation. in this work, the role of social interactions among endogenous networks of children with heterogeneous types/parental investments generate a role for human capital externalities the hope is to provide one class of micro-foundations for aggregative models w/ positive human capital externalities.
i met francesco agnostinelli when he joined the phd program at asu in the fall of 2012. at that time, he was taking my mathematical economics course. since then, we have spent a great deal of time discussing various aspect of recursive equilibrium theory and supermodular/superextremal games, as well as discussing the finer details of italian (red) wines, limoncello, and all things berlusconi.
francesco is also very interested in the developing new methods for testing this models with multiple equilibria. as one might surmise, this project involves a great deal of econometrics. much to my chagrin, after extensive consultation with a various legal experts who are aware of all the more subtle aspects of modern arizona law, it has become clear to me that econometrics has not yet been banned by the progressive az state legislature (although citizens are encouraged to use the graduate textbooks by woolridge, greene, and hayashi for target practice at many of the finer phoenix area shooting ranges) . thankfully, given their recent history of excellent decision-making, i remain hopeful that our state representatives/leaders will once again do the "right thing".
i met dilsat dalkiran when she joined the phd program in economics at asu, and excelled in a course in mathematical economics that i was teaching. she is currently working on a project that develops new monotone map methods for comparing dynamic equilibria in nonoptimal economies with multiple equilibria and local indeterminacies, as well as a related project joint w/ manjira datta, lukasz wozny, and myself studying similar questions in dynamic economies. she, like every person born since 1983, is also working on female labor supply.....her current work focuing models that generate the so-called "u-shaped" female labor force participation. dilsat has broad interests in music, literature, dance, mathematics, and unfortunately broadway shows. she has recently convinced me of the paramount importance of turkish cuisine in the pantheon of "good food", and somehow i have talked her into teaching me how to cook classic turkish food. we shall see how patient she actually is when the cooking begins. she also runs a food blog i presume still. i hope to someday collaborate with her on this project contributing photographs of her food creations.