Self-study notes following the notes of N. Berestycki & J.R. Norris.

A seemingly innocent unsolved problem on the sum of Rademacher random variables (taking values $+ 1$ and $-1$ with equal probability $\frac{1}{2}$)

Notes for the summer school on Random Media at Colorado State Univeristy.

Notes and references to study stochastic calculus.

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