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Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory.

5 votes
2 answers
802 views

Blow-up for the quasilinear heat equation $u_t= u \ u_{x x}$ or the related $w_t= \left(w_x ...

What kind of approaches can be used to study the following quasilinear parabolic pde for a scalar function $u=u(x,t)$ ? $$ u_t= u \ u_{x x} $$ The physical problem where this pde comes from dictates …
Ivan Dornic's user avatar
0 votes

Imaginary exponential functional of Brownian motion

It turns out that the above generating function pde is related to a Lax pair of Painlevé III/Sine-Gordon, at least for the parameter value g=2. As soon as I have written this up, I'll post details
Ivan Dornic's user avatar
1 vote

Imaginary exponential functional of Brownian motion

For those interested, we have released today an ArXiv preprint with what we were able to find: http://arxiv.org/abs/1101.1173
Ivan Dornic's user avatar
0 votes

"Square root" of Beta(a,b) distribution

I might have misunderstood the question but, if not, I suggest this. Denoting, $Z = X \ Y$, take Mellin-Transform expectations of both-sides. Since $E[X^{s-1}] = B(a+s,b)$, this condition you demand …
Ivan Dornic's user avatar
1 vote

Numerical Solution to Inverse Integral (Pseudo Random Number Generation)

Luc Devroye has written some timeago a superb book "Non-uniform random variate generation". The whole book is available for free on his webpage.
Ivan Dornic's user avatar
4 votes
3 answers
1k views

Imaginary exponential functional of Brownian motion

Thanks to the work by M. Yor and colleagues, much is known about the following exponential of Brownian motion: $X= \int_0^{\infty}{\rm d}t \ e^{-t + g \ B(t)}$ where $g$ is a real scale parameter. …
Ivan Dornic's user avatar