The model introduced here in archaeology is used in sociology to analyze relationships
Chapter 2, Problem 31(choose chapter or problem)
The model introduced here in archaeology is used in sociology to analyze relationships within a group of people. For example, consider the relationship of "friendship" within a group. Assume that all friendships are mutual. Label the people 1, ... , n and define a square matrix A as follows: aii = 0 for all i (diagonal elements of A are zero) aii = O if i and j are not friends (a) Prove that if F = AA1, then fii is the number of friends that i and j have in common. DEFINITION (b) Suppose that all friendships are not mutual. How does this affect the model?
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