=+

(b) Relate the series in Problem 17.7 to Fubini's theorem.

18.10.

(a) Let u = v be counting measure on X = Y = {1,2 ,... }. If 2 - 2 ~*
if x =y, f(x,y)={-2+2 ~* if x=y+1, 0 otherwise, then the iterated integrals exist but are unequal. Why does this not contradict Fubini's theorem?