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 Mar 30 comment Brunett Derrida behaviour for the branching brownian motion with selection Why not ask the authors? Mar 15 awarded Yearling Feb 8 revised How many times does a simple symmetric random walk of length n return to the origin? added 2 characters in body; edited tags Jan 21 revised a unique solution ? iteration involving conditional distributions deleted 22 characters in body Jan 21 revised a unique solution ? iteration involving conditional distributions deleted 13 characters in body Jan 20 awarded Revival Dec 6 comment Reference for branching processes mypage.iu.edu/~rdlyons/prbtree/prbtree.html Nov 28 comment Why did Grothendieck say stop publishing his works? "Novels or art" should not be "properties of the mankind"? Sep 29 comment $\langle X\rangle_t = t$ Why was this heavily upvoted? Seems to me to be rather offtopic for the site... Sep 25 awarded Citizen Patrol Sep 25 comment Integral of the product of Normal density and cdf @Randel How can you think this is a great answer if you feel there is a gap at the first step, I wonder... Anyway, thanks for the appreciation, and note that $$\int_\mathbb R\Phi(B^{-1}(x-A))\varphi(x)\mathrm dx=E(\Phi(B^{-1}(Y-A)))$$ and that, for every $x$, $$\Phi(x)=P(X\leqslant x),$$ hence, using the independence of $X$ and $Y$, one gets the formula in the post. Sep 16 awarded Nice Answer Jun 28 revised Typical value of totient function added 21 characters in body Jun 22 revised Constructing Bernoulli random variables with prescribed correlation deleted 8 characters in body Jun 18 comment for which values of $\theta$ does this equation $x_{n+1}=\cos(\theta)x^2_{n}-\sin(\theta)x^2_{n-1}$ have bounded solutions? Every ball centered at $0$ with radius at most $1/(|A|+|B|)$ is stable by the dynamics. For every $\theta$, $1/(|A(\theta)|+|B(\theta)|)\leqslant1/\sqrt2$. For every starting point such that $x_{-1}^2+x_0^2\lt1/2$, $x_n\to0$ at least geometrically fast. May 1 revised Brownian local time density deleted 12 characters in body Mar 15 awarded Yearling Sep 26 revised Correlated Brownian motion and Poisson process deleted 9 characters in body Sep 24 awarded Autobiographer Sep 23 revised Top specialized journals added 2 characters in body