## 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.

- Introduction.
- The model and results.
- Proofs.

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