Summary: A proof is given that: If a random displacement y_{1} , y_{2} , ... , y_{n} with probability distribution df=Φ(y_{1} , ... , y_{n}) dy_{1} ... dy_{n} is added to a point at X_{1}, ..., X_{n} then the probability that it (i.e. X_{1}+y_{1} , ... , X_{n}+y_{n}) should still be within a space V is maximal if, and only if, X_{1} ... X_{n} satisfy the equation (8). (See next note).


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