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A note on invariance of the Cauchy and related distributions

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arxiv 1908.04006 v2 pith:L5HAVWF7 submitted 2019-08-12 math.PR math.CV

A note on invariance of the Cauchy and related distributions

classification math.PR math.CV
keywords cauchynoterelatedaboveanalyticcomplexconcernsdistribution
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It is known that if $f$ is an analytic self map of the complex upper half-plane which also maps $\mathbb{R}\cup\{\infty\}$ to itself, and $f(i)=i$, then $f$ preserves the Cauchy distribution. This note concerns three results related to the above fact.

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