B. Tsirelson | Fourier-Walsh coefficients for a coalescing flow (discrete time) | Recent works |
Boris Tsirelson,
"Fourier-Walsh coefficients for a coalescing
flow (discrete time)."
math.PR/9903068.
Available online (free of charge) from e-print archive (USA):
xxx.lanl.gov/abs/math.PR/9903068/
or its Israeli mirror:
xxx.tau.ac.il/abs/math.PR/9903068/
A short (9 pages, 3 figures) research preprint. Bibl. 2 refs.
A two-dimensional array of independent random signs produces coalescing random walks. The position of the walk, starting at the origin, after N steps is a highly nonlinear, noise sensitive function of the signs. A typical term of its Fourier-Walsh expansion involves the product of about square roof of N signs.
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