Ihave already done most of the calculations, just looking for someone to me interpret them . i already know the answer to question (i), just wanted to give you a better idea of the whole problem.
assume the boolean matrix below is mr and that mr represents the relation r where r represents the connecting flights that an airline has between 4 cities: a, b, c, and d. so there is a 1 in row x column y iff there is a connecting flight between (from) city x and (to) city y. that is, the rows of the matrix represent the cities of the origins of the flight and the columns represent the destination cities. let the 0 in row d and column d stand for planes cannot