Analytic Properties of Brownian Motion

نویسنده

  • ELAN BECHOR
چکیده

This paper largely deals with some analytic properties of Brownian motion and those of its discrete counterpart, random walks. I prove that the random walker returns to the origin infinitely with probability one if and only if his coin is not biased. I then then show how to construct a continuous Brownian motion over the reals. While demonstrating this existence is in itself non-trivial, I show that it has a number of pathological properties: continuous everywhere but nowhere differientiable and unbounded variation in any nonempty closed interval.

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تاریخ انتشار 2007