Abstract
We study the extent to which sets A subset of Z/NZ, AF prime, resemble sets of integers from the additive point of view ('up to Freiman isomorphism'). We give a direct proof of a result of Freiman, namely that if vertical bar A + A vertical bar = (32K)(-12K2). As a byproduct of our argument we obtain a sharpening of the second author's result on sets with small sumset in torsion groups. For example, if A subset of F-2(n), and if vertical bar A + A vertical bar
Translated title of the contribution | Sets with small sumset and rectification |
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Original language | English |
Pages (from-to) | 43 - 52 |
Number of pages | 10 |
Journal | Bulletin of the London Mathematical Society |
Volume | 38 (1) |
DOIs | |
Publication status | Published - Feb 2006 |
Bibliographical note
Publisher: Oxford University PressOther identifier: IDS Number: 012QT