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A conformal Skorokhod embedding

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arxiv 1905.00852 v1 pith:YCND4ETT submitted 2019-05-02 math.PR

classification math.PR
keywords barrierembeddingskorokhodbrowniancenteredcomplex-analyticconformalconstructive
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Start a planar Brownian motion and let it run until it hits some given barrier. We show that the barrier may be crafted so that the x coordinate at the hitting time has any prescribed centered distribution with finite variance. This provides a new, complex-analytic proof of the Skorokhod embedding theorem. Our method is constructive and can give an explicit description of the barrier.

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Cited by 1 Pith paper

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  1. A note on invariance of the Cauchy and related distributions

    math.PR 2019-08 conditional novelty 4.0 of 10

    The paper proves, via conformal invariance of Brownian motion, that the hyperbolic secant law is invariant under g(x)=(2/π)log|sinh(πx/2)|, and gives a general transfer principle for exit distributions of symmetric domains.

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