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arxiv: 0710.2545 · v2 · submitted 2007-10-12 · 🧮 math.CA · math.NT

A Freiman-type theorem for locally compact abelian groups

classification 🧮 math.CA math.NT
keywords abeliancompactlocallyfreiman-typegroupstheoremdescribefactors
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We prove a Freiman-type theorem for locally compact abelian groups. If A is a subset of a locally compact abelian group with Haar measure m and m(nA) < n^dm(A) for all n>d log d then we describe A in a way which is tight up to logarithmic factors in d.

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