game theory

2. Two players play a repeated game in which each of them is given an envelope and can put either 10 or nothing into it. The judge then collects the envelopes, adds 50% to the total amount, and splits the money equally between two players. The payoffs of players are their net monetary gains or losses. Does a profile of grim trigger strategies which rewards players that continue putting money in an envelope and constitutes an SPNE exist given the conditions below? a) T = 10 b) T ->00, 6 =.5