Calculus of Variations and Geometric Measure Theory

G. Crippa - C. Jimenez - A. Pratelli

Optimum and equilibrium in a transport problem with queue penalization effect

created by crippa on 23 Aug 2008
modified on 04 Aug 2009


Published Paper

Inserted: 23 aug 2008
Last Updated: 4 aug 2009

Journal: Advances in Calculus of Variations
Volume: 2
Number: 3
Pages: 207-246
Year: 2009


Consider a distribution of citizens in an urban area in which some services (supermarkets, post offices\ldots) are present. Each citizen, in order to use a service, spends an amount of time which is due both to the travel time to the service and to the queue time waiting in the service. The choice of the service to be used is made by every citizen in order to be served more quickly. Two types of problems can be considered: a global optimization of the total time spent by the citizens of the whole city (we define a global optimum and we study it with techniques from optimal mass transportation) and an individual optimization, in which each citizen chooses the service trying to minimize just his own time expense (we define the concept of equilibrium and we study it with techniques from game theory). In this framework we are also able to exhibit two time-dependent strategies (based on the notions of prudence and memory respectively) which converge to the equilibrium.