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Sans résuméA MonsieurG. Köthe pour son 60e anniversaire  相似文献   

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Two plane curve germs with two branches, which are isomeric, are shown to have isomorphic integral Seifert forms. The weight filtration on the integral homology of the Milnor fiber is the key ingredient of the proof. To cite this article: P. du Bois, C. R. Acad. Sci. Paris, Ser. I 336 (2003).  相似文献   

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Sans résumé Received 8 October 1993; in final form 1 November 1995  相似文献   

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《Comptes Rendus Mathematique》2002,334(12):1107-1112
We define the asymptotic size of a parabolic fixed point, and link it to the speed of explosion into a cycle in some cases. For the fixed points of the quadratic family, we give a relation to the inner conformal radius of Siegel disks. Applications will be given in a further note. To cite this article: A. Chéritat, C. R. Acad. Sci. Paris, Ser. I 334 (2002) 1107–1112.  相似文献   

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The main results about automatas and the languages they accept are easily extended to automatas which recognize a family of languages (Li)iεI of a free monoid, that is to automatas which recognize simultaneously all the languages Li. This generalization enhances the notion of automata of type (p,r) introduced by S. Eilenberg [4]. In a similar way the notion of syntactic monoid of a family of languages extends the notion of syntactic monoid of a language. This extension is far from being trivial since we show that every finite monoid is the syntactic monoid of a recognizable partition of a free monoid, though this is false for the syntactic monoids of languages.   相似文献   

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We establish some convexity properties of the numerical range for a family of operators on a Hilbert space lying in an uniform dual algebra.  相似文献   

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Les graphes envisagés dans cet article sont non orientés, sans boucles ni arês multiples. On désigne par X(G) et E(G) les ensembles de sommets et d'arêtes d'un graphe G; ces ensembles seront toujours finis. Les notations usuelles sont ceiles de Berge [1].Dans [5], Zykov introduit la notion de graphe joint de deux graphes donnés. Une propriété du joint de deux graphes dont l'un est réduit à un sommet est donnée dans [3]; c'est une étude plus générate et systématique que nous présentons ici.  相似文献   

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All the letters represent relative integers, except and and i = e1e2 in R(2, 0) oder e1 in R(1, 0). We study the Fermat’s equation
(1)
abc being prime two and two and by utilizing an elementary method. We use the Gauss’ formula
where n = 5, 7, 11, 17.
1.  If 2 is the p · g · c · d· of A and B we put
and A′ and B′ are prime between themselves.
2.  If βn = bn / (c − a) is not divisible by n, we write the expansion
(2)
by puting oder whereas oder It follows that B ′ is divisible by n.
3.  If one ab oder c is divisible by n we prove the impossibility
4.  In the case n = 3 the ring {a + bj} is euclidian which permits to conclude in favour of the impossibility.
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—Si A est une algèbre et M un A-module,on note dA (M) la dimension de Oelf and-Kirillov de M . Après l'étude de quelques propriétés de cette dimension , on introduit l'indice X(A) - Inl(d A(M) ; M ≠ 0) . Nous déterminons cet indice dans le cas des algèbres de McCONNELL.  相似文献   

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《Comptes Rendus Mathematique》2008,346(3-4):239-242
The measures of the fields of density, pressure and temperature of an atmospheric column are often scarce and sometimes inaccurate, which needs a necessary reconstruction. An original technique of reconstruction with a confined storage reduced to 6 parameters only, is proposed and validated by using a mathematical model with an altitude dependent gravity, and a discretization by an original well-balanced scheme. To cite this article: A.-Y. LeRoux, L. Vignon, C. R. Acad. Sci. Paris, Ser. I 346 (2008).  相似文献   

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