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Journal de Th´

eorie des Nombres

de Bordeaux

17

(2005), 181–193

Restricted set addition in Abelian groups:

results and conjectures

par

Vsevolod F. LEV

R´esum´e. Nous pr´esentons un ensemble de conjectures imbriqu´ees qui peuvent ˆetre consid´er´ees comme des analogues pour l’addition restreinte des th´eor`emes classiques dˆus `a Kneser, Kemperman et Scherk. Les connections avec le th´eor`eme de Cauchy-Davenport, la conjecture d’Erd˝os-Heilbronn et la m´ethode polynomiale d’Alon-Nathanson-Ruzsa sont ´etudi´ees.

Cet article ne suppose pas d’expertise de la part du lecteur et peut servir d’introduction au sujet.

Abstract. We present a system of interrelated conjectures which can be considered as restricted addition counterparts of classi-cal theorems due to Kneser, Kemperman, and Scherk. Connec-tions with the theorem of Cauchy-Davenport, conjecture of Erd˝ os-Heilbronn, and polynomial method of Alon-Nathanson-Ruzsa are discussed.

The paper assumes no expertise from the reader and can serve as an introduction to the subject.

Vsevolod F.Lev

Department of Mathematics The University of Haifa at Oranim Tivon 36006,Israel

E-mail:[email protected]

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