Assaf, David; Samuel-Cahn, Ester - Center for the Study of Rationality, Hebrew University … - 2003
EX^*_n is what can be obtained by a ``prophet". A ``mortal" on the other hand, may use k >= 1 stopping rules t_1, ..., t …} X_t_i}] where the supremum is over all stopping rules which stop by time n. The well known ``prophet inequality" states …