Outside the market slides 8

The Shapley Value

each pays the average of his MC across

all possible ways of ordering people.

Shapley-Shubik index

The Shapley value in this context is also called the

Shapley-Shubik index.

Introducing an additional voter can increase someone's voting

power.

What happens to Ellen's voting power if we add Hector with 2

votes?

We can extend the Shapley-Shubik index to supermajority or

other voting rules