Some concepts from the general theory of stochastic processes

the result for the diffusion coefficient D = 2prpi sx ) /2s.t is the same as in Eq. (7.7) only whenp,. = pi = 1/2. The important observation is, again, that a Gaussian distribution was obtained as an approximation to the actual binomial one in the large N limit. 

4 Some concepts from the general theory of stochastic processes 

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