Reinforcement Learning, Markov Decision Process, Deep Learning, Machine Learning, Artificial Intelligence.
at time t+3 is multiplied by 0.9 x 0.9 = 0.81. Hence 81% of its value is considered. For fourth reward, only (0.9 x 0.9 x 0.9 =0.729) 72.9% of its value is considered in total return. And so on …… Thus a reward received after k+1 time steps, is multiplied by gamma to the power k as shown in second