Nous améliorons les meilleures bornes supérieures et inférieures connues pour la fonction d’Erdös et Graham définie par , où le premier maximum est pris sur toutes les bases (exactes) d’ordre au plus , où désigne le sous-ensemble de composé des éléments tels que soit encore une base et où, enfin, désigne l’ordre (exact) de . Notre étude nous conduira, entre autres, à prouver un nouveau résultat additif général découlant de la méthode isopérimétrique et à étudier trois problèmes additifs (dans les groupes cycliques) de nature combinatoire.
We improve the best known upper and lower bounds for the Erdös and Graham’s function defined by , where the first maximum is taken over all (exact) bases of order at most , where stands for the subset of composed of the elements such that is also a basis and where denotes the (exact) order of . Our study leads us, among other things, to prove a new general additive result following from the isoperimetric method and to study three additive problems (in cyclic groups) of a combinatorial nature.
@article{AIF_2004__54_6_1717_0, author = {Plagne, Alain}, title = {A propos de la fonction $X$ d'Erd\"os et Graham}, journal = {Annales de l'Institut Fourier}, volume = {54}, year = {2004}, pages = {1717-1767}, doi = {10.5802/aif.2064}, mrnumber = {2134222}, zbl = {1074.11009}, language = {fr}, url = {http://dml.mathdoc.fr/item/AIF_2004__54_6_1717_0} }
Plagne, Alain. A propos de la fonction $X$ d’Erdös et Graham. Annales de l'Institut Fourier, Tome 54 (2004) pp. 1717-1767. doi : 10.5802/aif.2064. http://gdmltest.u-ga.fr/item/AIF_2004__54_6_1717_0/
[1] Grekos' function has a linear growth, Proc. Amer. Math. Soc, Tome 132 (2004), pp. 2833-2840 | MR 2063100 | Zbl 1051.11011
[2] Recherches sur les nombres, J. École Polytech, Tome 9 (1813), pp. 99-123
[3] Recouvrement optimal du cercle par les multiples d'un intervalle, Acta Arith, Tome 59 (1991), pp. 21-35 | MR 1133235 | Zbl 0697.10030
[4] Estimation du nombre d'exceptions à ce qu'un ensemble de base privé d'un point reste un ensemble de base, J. Reine Angew. Math, Tome 539 (2001), pp. 45-53 | MR 1863853 | Zbl 1002.11011
[5] On bases with an exact order, Acta Arith, Tome 37 (1980), pp. 201-207 | MR 598875 | Zbl 0443.10036
[6] Old and new problems and results in combinatorial number theory, Monographies de l'Enseignement Mathématique, Tome 28 (1980) | Zbl 0434.10001
[7] Sur l'ordre d'une base additive, Séminaire de théorie des nombres de Bordeaux, Tome exposé 31 (1987/88) | Zbl 0718.11007
[8] Sequences, Oxford University Press (1966) | MR 210679 | Zbl 0141.04405
[9] An isoperimetric method in Additive Theory, J. Algebra, Tome 179 (1996), pp. 622-630 | MR 1367866 | Zbl 0842.20029
[10] Subsets with small sums in Abelian groups I: the Vosper property, Europ. J. of Combinatorics, Tome 18 (1997), pp. 541-556 | MR 1455186 | Zbl 0883.05065
[11] Some results in additive number theory I: The critical pair theory, Acta Arith, Tome 96 (2001), pp. 97-119 | MR 1814447 | Zbl 0985.11011
[12] A generalization of Freiman's theorem, Acta Arith, Tome 103 (2002), pp. 147-156 | MR 1904869 | Zbl 1007.11011
[13] A critical pair theorem applied to sum-free sets in abelian groups, Comment. Math. Helv, Tome 79 (2004), pp. 183-207 | MR 2031705 | Zbl 1045.11072
[14] An introduction to the theory of numbers, Clarendon Press, Oxford University Press (1979) | MR 568909 | Zbl 0423.10001
[15] On complexes in a semi-group, Indag. Math, Tome 18 (1956), pp. 247-254 | MR 79005 | Zbl 0072.25605
[16] Abschätzung der asymptotischen Dichte von Summenmengen, Math. Z, Tome 58 (1953), pp. 459-484 | MR 56632 | Zbl 0051.28104
[17] Summenmengen in lokalkompakten abelschen Gruppen, Math. Z, Tome 66 (1956), pp. 88-110 | MR 81438 | Zbl 0073.01702
[18] Addition theorems, Wiley-Interscience (1965) | Zbl 0127.27203
[19] Additive number theory. Inverse problems and the geometry of sumsets, Springer Verlag, GTM, Tome 165 (1996) | MR 1477155 | Zbl 0859.11003
[20] Some applications of a theorem of M. Kneser, J. Number Theory, Tome 44 (1993), pp. 1-8 | MR 1219479 | Zbl 0780.11007
[21] Removing one element from an exact additive basis, J. Number Theory, Tome 87 (2001), pp. 306-314 | MR 1824151 | Zbl 1067.11005
[22] Distinct elements in a set of sums (solution of a problem of Leo Moser), Amer. Math. Monthly, Tome 62 (1955), p. 46-47
[23] On the distribution mod,of the sequence , Ann. Univ. Sci. Budapest. Eötvös Sect. Math, Tome 1 (1958), pp. 127-134 | Zbl 0094.02903
[24] Gelöste und ungelöste Fragen über Basen der natürlichen Zahlenreihe I, J. Reine Angew. Math, Tome 194 (1955), pp. 40-65 | MR 75228 | Zbl 0066.03101
[25] Gelöste und ungelöste Fragen über Basen der natürlichen Zahlenreihe II, J. Reine Angew. Math, Tome 194 (1955), pp. 111-140 | MR 75228 | Zbl 0066.03101
[26] Über die Anordnung der Vielfachen einer reellen Zahl mod 1, Ann. Univ. Sci. Budapest Eötvös Sect. Math, Tome 1 (1958), pp. 107-111 | Zbl 0094.02904
[27] On successive settings of an arc on the circumference of a circumference of a circle, Fund. Math, Tome 46 (1959), pp. 187-189 | MR 104651 | Zbl 0085.27203
[28] The critical pairs of subsets of a group of prime order, J. London Math. Soc, Tome 31 (1956), pp. 200-205 | MR 77555 | Zbl 0072.03402
[29] Addendum to The critical pairs of subsets of a group of prime order, J. London Math. Soc, Tome 31 (1956), pp. 280-282 | MR 78368 | Zbl 0072.03402