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# Questions

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### When is the image of a non Lebesgue-measurable set measurable?

dec 13 11 at 17:55 Robert Israel 10.8k822

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### Are there any non-linear solutions of Cauchy’s equation ($f(x+y)=f(x)+f(y)$) without assuming the Axiom of Choice?

mar 6 11 at 16:25 Andres Caicedo 14.4k14279

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