There is a city, which looks like chopped isosceles triangle, as shown below. Citizens live  uniformly distributed all over the city.  Two ice-cream vendors, A and B, must independently set up stores in the city. Each citizen buys  from the vendor closest to their location and when equidistant from both vendors they choose by  coin toss. Each vendor’s aim is to maximize the expected number of customers. A choice of  location by the two vendors is a Nash equilibrium if no vendor can do better by deviating  unilaterally. Does this game have a Nash equilibrium? If so, describe it. If not, explain why not

Exploring Economics
8th Edition
ISBN:9781544336329
Author:Robert L. Sexton
Publisher:Robert L. Sexton
Chapter15: Oligopoly And Strategic Behavior
Section: Chapter Questions
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There is a city, which looks like chopped isosceles triangle, as shown below. Citizens live 
uniformly distributed all over the city.  Two ice-cream vendors, A and B, must independently set up stores in the city. Each citizen buys 
from the vendor closest to their location and when equidistant from both vendors they choose by 
coin toss. Each vendor’s aim is to maximize the expected number of customers. A choice of 
location by the two vendors is a Nash equilibrium if no vendor can do better by deviating 
unilaterally. Does this game have a Nash equilibrium? If so, describe it. If not, explain why not

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