Skip to main content
SHOW DETAILS
eye
Title
Date Archived
Creator
Arxiv.org
texts

eye 86

favorite 0

comment 0

This article is the $\mathrm{Z}_l$-version of my paper "Monodromie du faisceau pervers des cycles \'evanescents de quelques vari\'et\'es de Shimura simples" in Invent. Math. 2009 vol 177 pp. 239-280, where we study the vanishing cycles of some unitary Shimura variety. The aim is to prove that the cohomology sheaves of this complexe are free so that, thanks to the main theorem of Berkovich on vanishing cycles, we can deduce that the $\mathrm{Z}_l$-cohomology of the model of...
Source: http://arxiv.org/abs/0707.4396v3
Arxiv.org
by Alain Cournier; Swan Dubois; Vincent Villain
texts

eye 56

favorite 0

comment 0

A snap-stabilizing algorithm ensures that it always behaves according to its specifications whenever it starts from an arbitrary configuration. In this paper, we interest in the message forwarding problem in a message-switched network. We must manage network ressources in order to deliver messages to any processor of the network. In this goal, we need information given by a routing algorithm. But, due to the context of stabilization, this information can be initially corrupted. It is why the...
Source: http://arxiv.org/abs/0905.1786v1
Arxiv.org
texts

eye 54

favorite 0

comment 0

This second part is devoted to the proof of all main results that we have mentionned in [KI].
Source: http://arxiv.org/abs/0906.1299v1
Gallica
texts

eye 20

favorite 0

comment 0

Avec mode texte
Contient une table des matières
Topics: Géographie médicale, Climatologie médicale
[Rasselas, Prince of Abyssinia (français)]
Gallica
texts

eye 35

favorite 0

comment 0

Contient une table des matières
Topic: Rosset
Gallica
texts

eye 49

favorite 0

comment 0

Comprend : Extraits des Agenda d'Eugène Delacroix ; Opinions et procédés d'Eugène Delacroix, extraits des souvenirs manuscrits de M. de Planet
Topic: Delacroix, Eugène (1798-1863) -- Sources
Arxiv.org
texts

eye 99

favorite 0

comment 0

The purpose of this work is to geometrize the notion of mixed Hodge structure. Therefore, we associate equivariant vector bundles on the projective plane to trifiltered vector spaces. Making this Rees construction with filtrations arising from mixed Hodge structures gives an equivalence of categories between the category of mixed Hodge structures and a category of equivariant vector bundles on ${\bf P}^{2}_{\bf C}$ that are semistable for a semistability condition with respect to a divisor....
Source: http://arxiv.org/abs/math/0307156v1
Arxiv.org
by Guy Laville; Ivan Ramadanoff
texts

eye 51

favorite 0

comment 0

Soit R\_{0,2m+1} l'alg\`{e}bre de Clifford de R^{2m+1} muni d'une forme quadratique de signature n\'{e}gative, D = \sum\_{i=0}^{2m+1} e\_i {\partial\over \partial x\_i}, \Delta le Laplacien ordinaire. Les fonctions holomorphes Cliffordiennes f sont les fonctions satisfaisant \`{a} D\Delta^m f = 0. Nous \'{e}tudions les solutions polynomiales et singuli\`{e}res, les repr\'{e}sentations int\'{e}grales et leurs cons\'{e}quences et enfin le fondement de la th\'{e}orie des fonctions elliptiques...
Source: http://arxiv.org/abs/math/0502071v1
Arxiv.org
by Walid Aloulou; Didier Arnal; Ridha Chatbouri
texts

eye 70

favorite 1

comment 0

The space of smotth functions and vector fields on $\R^d$ is a Lie subalgebra of the (graded) Lie algebra $T\_{poly}(\R^d)$, equipped with the Scouten bracket. In this paper, we compute the cohomology of this subalgebra for the adjoint representation in $T\_{poly}(\R^d)$, restricting ourselves to the case of cochains defined with purely aerial Kontsevich's graphs, as in [AGM]. We find results which are very similar to the classical Gelfand-Fuchs and de Wilde-Lecomte one.
Source: http://arxiv.org/abs/math/0507058v1
We prove Breuil's conjecture concerning the reduction modulo $p$ of trianguline representations $V$ and of the representations $\Pi(V)$ of $\mathrm{GL}_2(\mathbf{Q}_p)$ associated to them by the $p$-adic Langlands correspondence. The main ingredient of the proof is the study of some smooth irreducible representations of $\mathrm{B}(\mathbf{Q}_p)$ through models built using the theory of $(\phi,\Gamma)$-modules.
Source: http://arxiv.org/abs/math/0510090v1
Topics: Blood, Blood (in religion, folk-lore, etc.)
Arxiv.org
by J. -L. Colliot-Th'el`ene
texts

eye 39

favorite 0

comment 0

A connected reductive group G over a field k may be written as a quotient H/S, where the k-group H is an extension of a quasitrivial torus by a simply connected semisimple group, and S is a flasque k-torus, central in H (a flasque torus is a torus whose cocharacter group is an H^1-trivial Galois lattice). The flasque torus S is well-defined up to multiplication by a quasitrivial torus. Such presentations G=H/S lead to a simplified approach of the Galois cohomology of G and of related objects,...
Source: http://arxiv.org/abs/math/0609521v1
Arxiv.org
texts

eye 55

favorite 0

comment 0

We show a weak form of the function field version of Oesterle's abc conjecture. It asserts that, if $B$ is a complex projective connected curve, the number of intersection points, counted without multiplicities, of a fixed divisor $D$ of degree $d>0$ over $B$ with the graph $H$ of a section $h:B\to B\times \bP^1$ to the first projection is at least $(d-2)n-C(B,D)$, where $n$ is the degree of $H$ over $\bP^1$, and $C(D,B)$ a constant depending only on these two data. We show this number is at...
Source: http://arxiv.org/abs/math/0703502v2
Arxiv.org
by Thierry Despeyroux; Yves Lechevallier; Brigitte Trousse; Anne-Marie Vercoustre
texts

eye 46

favorite 0

comment 0

This paper presents some experiments in clustering homogeneous XMLdocuments to validate an existing classification or more generally anorganisational structure. Our approach integrates techniques for extracting knowledge from documents with unsupervised classification (clustering) of documents. We focus on the feature selection used for representing documents and its impact on the emerging classification. We mix the selection of structured features with fine textual selection based on syntactic...
Source: http://arxiv.org/abs/cs/0508036v2
Contient une table des matières
Gallica
texts

eye 31

favorite 0

comment 0

Contient une table des matières
Gallica
texts

eye 27

favorite 0

comment 0

Contient une table des matières
Collection : Bibliothèque rose illustrée
Contient une table des matières
Gallica
texts

eye 29

favorite 0

comment 0

Appartient à l’ensemble documentaire : RhoneAlp1
Gallica
texts

eye 41

favorite 0

comment 0

Contient une table des matières
Avec mode texte
Gallica
texts

eye 48

favorite 0

comment 0

Avec mode texte
Appartient à l’ensemble documentaire : PACA1
Gallica
texts

eye 35

favorite 0

comment 0

[La petite Fadette (français)]
Collection : Collection Nelson ; 288
Gallica
texts

eye 57

favorite 0

comment 0

Appartient à l’ensemble documentaire : ChArdenn1
Topic: Reims (Marne) -- Cathédrale Notre-Dame
Comprend : Essai sur la vie et les ouvrages de l'auteur
Gallica
texts

eye 31

favorite 0

comment 0

Avec mode texte
Gallica
texts

eye 42

favorite 0

comment 0

Contient une table des matières
Gallica
texts

eye 40

favorite 0

comment 0

Contient une table des matières
Arxiv.org
by Jean-Pierre Kahane
texts

eye 181

favorite 0

comment 0

Laplace's views on randomness and determinism. The paper was written for "Cahiers rationalistes" and addresses a rather wide audience. It contains large quotations of Laplace, most of them coming from his introduction to the book "Analytical theory of probabilities".
Source: http://arxiv.org/abs/0709.4382v1
Arxiv.org
texts

eye 55

favorite 0

comment 0

We prove a version of Manin's conjecture for a certain family of intrinsic quadrics, the base field being a global field of positive characteristic. We also explain how a very slight variation of the method we use allows to establish the conjecture for a certain generalized del Pezzo surface.
Source: http://arxiv.org/abs/1001.3929v3
Arxiv.org
by Hui Hu; Xia-Ji Liu; Peter D. Drummond; Hui Dong
texts

eye 91

favorite 0

comment 0

The crossover from a BEC (Bose-Einstein condensation) to a BCS (Bardeen-Cooper-Schrieffer) superfluid in dilute gases of ultracold Fermi atoms creates an ideal environment to enrich our knowledge of strongly correlated many-body systems. These experiments are relevant to a wide range of fields from condensed matter to astrophysics. The nature of pairing in strongly interacting Fermi gases can be readily studied, thus aiding our understanding of related problems in high-T_{c} superconductors,...
Source: http://arxiv.org/abs/1003.1538v2
Arxiv.org
texts

eye 59

favorite 0

comment 0

For a fixed number field and an elliptic curve defined and semi-stable over this number field, we consider the set of prime numbers p such that the Galois representation attached to the p-torsion points of the elliptic curve is reducible. When the number field satisfies a certain necessary condition, we give an explicit bound, depending only on the number field and not on the semi-stable elliptic curve, for these primes. This generalizes previous results of Kraus.
Source: http://arxiv.org/abs/1202.1649v1
Arxiv.org
by Nicolas Loriant; Marc Segura Devillechaise; Jean-Marc Menaud
texts

eye 64

favorite 0

comment 0

The ever growing software complexity suggests that they will never be bugfree and therefore secure. Software compagnies regulary publish updates. But maybe because of lack of time or care or maybe because stopping application is annoying, such updates are rarely if ever deployed on users' machines. We propose an integrated tool allowing system administrators to deploy critical security updates on the fly on applications running remotly without end-user intervention. Our approach is based on an...
Source: http://arxiv.org/abs/cs/0411088v1
Arxiv.org
texts

eye 47

favorite 0

comment 0

The aim of this fisrt part is to introduce, for a rather large class of hypersurface singularities with 1 dimensionnal locus, the analog of the Brieskorn lattice at the origin (the singular point of the singular locus). The main results are the finitness theorem for the corresponding (a,b)-module obtained via Kashiwara's constructibility theorem, and non torsion results for a plane curve singularity (not nessarily reduced) and for the suspension of such non torsion cases with an isolated...
Source: http://arxiv.org/abs/math/0505407v2
Arxiv.org
texts

eye 66

favorite 0

comment 0

Using differential techniques, we compute the Jacquet module of the locally analytic vectors of irreducible admissible unitary representations of GL_2(\qp). This gives a direct proof of some results of Colmez, leading to a proof of conjectures by Berger, Breuil and Emerton.
Source: http://arxiv.org/abs/1111.4543v1
Arxiv.org
texts

eye 46

favorite 0

comment 0

We prove here that the Poincar\'e exponent of a geometrically finite group od isometries of the 3-dimensionnal hyperbolic space coincides with the Hausdorff dimension of its limit set. We also compare the natural measures supported by this set: the Patterson measure and the Hausdorff and packing measures corresponding to the standart jauge.
Source: http://arxiv.org/abs/1207.7201v1
Arxiv.org
by Salahattin Özdemir
texts

eye 77

favorite 0

comment 0

Let R be an associative ring with unity and let M be an R-module. We call M (ample) Rad-supplementing if M has a (ample) Rad-supplement in every extension. If M is Rad-supplementing, then every direct summand of M is Rad-supplementing, but not each factor module of M. Every module with composition series is (Rad-)supplementing. M has a Rad-supplement in its injective envelope if and only if M has a Rad-supplement in every essential extension. R is left perfect if and only if R is semilocal and...
Source: http://arxiv.org/abs/1210.2893v1
Arxiv.org
texts

eye 65

favorite 0

comment 0

We study the geodesic flow of geometrically finite quotients $\Omega/{\Gamma}$ of Hilbert geometries, in particular its recurrence properties. We prove that, under a geometrical assumption on the cusps, the geodesic flow is uniformly hyperbolic. Without this assumption, we provide an example of a quotient whose geodesic flow has a zero Lyapunov exponent. We make the link between the dynamics of the geodesic flow and some properties of the convex set $\Omega$ and the group $\Gamma$. As a...
Source: http://arxiv.org/abs/1204.5005v2
Arxiv.org
texts

eye 50

favorite 0

comment 0

In this paper we prove the following result : if the p-th tensor power of the tangent bundle of a smooth projective variety contains the p-th power of an ample line bundle, then the variety is isomorphic either to the projective space or to a smooth quadric hypersurface.
Source: http://arxiv.org/abs/1009.1247v2
Loop quantum gravity has provided us with a canonical framework especially devised for background independent and diffeomorphism invariant gauge field theories. In this quantization the fundamental excitations are called spin network states, and in the context of general relativity, they give a meaning to quantum geometry. Spin foams are a sort of path integral for spin network states, supposed to enable the computations of transition amplitudes between these states. The spin foam quantization...
Source: http://arxiv.org/abs/1009.5100v1
Arxiv.org
texts

eye 70

favorite 0

comment 0

Let $F$ be a quadratic extension of $\mathbb{Q}_p$. We prove that smooth irreducible supersingular representations with central character of $\mathrm{GL}_2(F)$ are not of finite presentation.
Source: http://arxiv.org/abs/1201.4255v2
Arxiv.org
texts

eye 61

favorite 0

comment 0

We first show the existence of an effective determinantal representation for any univariate polynomial with real coefficients. Then, we more precisely establish that any univariate polynomial with real coefficients has an effective determinantal representation with signature (r+s,s) if and only if it has at least r real roots with multiplicity. The effective determinantal representations we construct used arrow matrices.
Source: http://arxiv.org/abs/0809.0804v1
Arxiv.org
by Jean-Louis Krivine
texts

eye 67

favorite 0

comment 0

We show how to transform into programs the proofs in classical Analysis which use the existence of an ultrafilter on the integers. The method mixes the classical realizability introduced by the author, with the "forcing" of P. Cohen. The programs we obtain, use read and write instructions in random access memory.
Source: http://arxiv.org/abs/0809.2394v1
Arxiv.org
texts

eye 53

favorite 0

comment 0

We associate two almost $C_p$-representations to a $(\phi,\Gamma)$-module, and we compute their dimensions and heights. As a corollary, we get a full faithfulness result for $B_e$-representations.
Source: http://arxiv.org/abs/0802.3649v1
Arxiv.org
texts

eye 46

favorite 0

comment 0

We study the reduction modulo $l$ of some elliptic representations; for each of these representations, we give a particular lattice naturally obtained by parabolic induction in giving the graph of extensions between its irreducible sub-quotient of its reduction modulo $l$. The principal motivation for this work, is that these lattices appear in the cohomology of Lubin-Tate towers.
Source: http://arxiv.org/abs/0805.2826v1
Arxiv.org
by Pascal Azerad; Stéphane Brull
texts

eye 69

favorite 0

comment 0

In this note we prove Poincar\'e type inequalities for a family of kinetic equations. We apply this inequality to the variational solution of a linear kinetic model.
Source: http://arxiv.org/abs/0805.3678v3
Arxiv.org
texts

eye 52

favorite 0

comment 0

A symplectic structure on the space of nondegenerate and nonparametrized curves in a locally affine manifold is defined. We also consider several interesting spaces of nondegenerate projective curves endowed with Poisson structures. This construction connects the Virasoro algebra and the Gel'fand-Dikii bracket with the projective differential geometry.
Source: http://arxiv.org/abs/hep-th/9409105v1
Arxiv.org
texts

eye 63

favorite 0

comment 0

Salikhov has proved a conjecture of Kontsevich and Shoikhet by reducing it to the consideration of three families of graphs, a consideration which was left to the reader for two of those families. We show, that the conjecture is just a very particular case of the classical theorem on the Euler characteristic, well explicated by Teleman.
Source: http://arxiv.org/abs/math/0106181v1
Arxiv.org
by Chandan Singh Dalawat
texts

eye 63

favorite 0

comment 0

We determine the Chow group of zero-cycles on a rational surface X defined over a finite extension K of the field of p-adic numbers (p a prime) when X is split by an unramified extension of K.
Source: http://arxiv.org/abs/math/0302157v3
On classifie \`a changement de variable formel pr\`es les champs de vecteurs --ainsi que les feuilletages qu'ils d\'efinissent-- qui sont des perturbations d'un champ hamiltonien quasi-homog\`ene $X_0$ par des termes de degr\'e de quasi-homog\'en\'eit\'e sup'erieur. Le degr\'e $\delta_0$ du champ $X_0$ est quelconque, mais on demande que le champ perturb\'e laisse encore invariant les s\'eparatrices de $X_0$. Les formes normales pr\'esent\'ees ici g\'en\'eralisent celles obtenues lorsque $X_0$...
Source: http://arxiv.org/abs/math/0303216v1
Arxiv.org
texts

eye 61

favorite 0

comment 0

Let $\wh K$ be the field of formal Laurent series in $X^{-1}$ over the finite field $k$, and let $A$ be the ring of polynomials in $X$ over $k$. One of the main results of the paper is to give a particularly nice coding of the geodesic flow on the quotient of the Bruhat-Tits tree $\TT$ of ${\rm PGL}\_2(\wh K)$ by ${\rm PGL}\_2(A)$, by using the continued fraction expansion of the endpoints of the geodesic lines in $\TT$ (the space of ends of $\TT$ identifies with $\PP\_1(\wh K)$). This allows...
Source: http://arxiv.org/abs/math/0511442v1
Arxiv.org
by Stéphane Bijakowski
texts

eye 76

favorite 0

comment 0

We prove in this paper a classicality result for overconvergent modular forms on PEL Shimura varieties of type (A) or (C) associated to an unramified reductive group on $\mathbb{Q}_p$. To get this result, we use the analytic continuation method, first used by Buzzard and Kassaei.
Source: http://arxiv.org/abs/1212.2035v1
Arxiv.org
by Calin-Iuliu Lazaroiu; Elena-Mirela Babalic
texts

eye 56

favorite 0

comment 0

We study constrained generalized Killing spinors over the metric cone and cylinder of a (pseudo-)Riemannian manifold, developing a toolkit which can be used to investigate certain problems arising in supersymmetric flux compactifications of supergravity theories. Using geometric algebra techniques, we give conceptually clear and computationally effective methods for translating supersymmetry conditions for the metric and fluxes of the unit section of such cylinders and cones into differential...
Source: http://arxiv.org/abs/1212.6918v1
Arxiv.org
texts

eye 57

favorite 0

comment 0

Let (M,g) be a four or six dimensional compact Riemannian manifold which is locally conformally flat and assume that its boundary is totally umbilical. In this note, we prove that if the Euler characteristic of M is equal to 1 and if its Yamabe invariant is positive, then (M,g) is conformally isometric to the standard hemisphere. As an application and using a result of Hang-Wang, we prove a rigidity result for these hemispheres regarding the Min-Oo conjecture.
Source: http://arxiv.org/abs/1104.2682v1
Arxiv.org
by Philippe Eyssidieux
texts

eye 60

favorite 0

comment 0

This article generalises to K\"ahler orbifolds general results on uniformisation of compact K\"ahler manifolds such as the Shafarevich conjecture for linear fundamental groups.
Source: http://arxiv.org/abs/1302.5015v1
Arxiv.org
by Max Rempel
texts

eye 42

favorite 0

comment 0

In the first part, we study the structure of the R-algebra generated by the Hodge classes on the self-product A^e of a very general principally polarized abelian variety A. In the second part, we compare various notions of positivity for cycles of higher codimension in A^e. In particular, we prove that, in every codimension 1 < k < en-1, there exist classes that are numerically effective but not pseudoeffective, which generalises a result of Debarre, Ein, Lazarsfeld and Voisin.
Source: http://arxiv.org/abs/1109.2483v2
Arxiv.org
texts

eye 150

favorite 0

comment 0

This survey article is about algebraic dynamics. It is mainly concerned by the arithmetic equidistribution theorems featured by dynamical systems. The contents are: - heights - algebraic dynamics, conjectures - equidistribution theorem on the projective line (after Bilu and Baker). It was written for the sesion 2006 of \'Etats de la recherche, Syst\`emes dynamiques polynomiaux.
Source: http://arxiv.org/abs/0812.0944v2
Arxiv.org
texts

eye 73

favorite 0

comment 0

We describe explicit algorithms for factoring q-difference operators and solving q-difference equations. These are well known results, presented in a "concrete" form. ----- Nous decrivons des algorithmes explicites pour la factorisation d'operateurs et la resolution d'equations aux q-differences. Il s'agit d'une presentation "concrete" de resultats bien connus.
Source: http://arxiv.org/abs/0812.1983v3
Arxiv.org
texts

eye 106

favorite 0

comment 0

Nous pr\'esentons un r\'esultat d'absence de spectre absolument continu dans un intervalle de $\R$ pour un op\'erateur de Schr\"odinger al\'eatoire continu et \`a valeurs matricielles agissant sur $L^2(\R)\otimes \C^N$ pour $N\geq 1$ arbitraire. Pour cela nous prouvons l'existence d'un intervalle d'\'energies sur lequel a lieu la s\'eparabilit\'e et la stricte positivit\'e des $N$ exposants de Lyapounov positifs de l'op\'erateur. La m\'ethode suivie, bas\'ee sur le formalisme de...
Source: http://arxiv.org/abs/0901.2182v2
Arxiv.org
texts

eye 76

favorite 0

comment 0

In a non supervised Bayesian estimation approach for inverse problems in imaging systems, one tries to estimate jointly the unknown image pixels $f$ and the hyperparameters $\theta$ given the observed data $g$ and a model $M$ linking these quantities. This is, in general, done through the joint posterior law $p(f,\theta|g;M)$. The expression of this joint law is often very complex and its exploration through sampling and computation of the point estimators such as MAP and posterior means need...
Source: http://arxiv.org/abs/0904.4148v1
Arxiv.org
texts

eye 77

favorite 0

comment 0

The present work is devoted to the derivation of an effective magnon-paramagnon theory starting from a microscopic lattice model of ferromagnetic metals. For some values of the microscopic parameters it reproduces the Heisenberg theory of localized spins. For small magnetization the effective model describes the physics of weak ferromagnets in accordance with the experimental results. It is written in a way which keeps O(3) symmetry manifest,and describes both the order and disordered phases of...
Source: http://arxiv.org/abs/cond-mat/9908024v3
Arxiv.org
texts

eye 78

favorite 0

comment 0

We show how the Galois-Picard_Vessiot theory of differential equations and difference equations, and the theory of holonomy groups in differential geometry, are different aspects of a unique Galois theory. The latter is based upon the construction and study of the tensor product of non commutative connections over a commutative base, without any curvature assumption. This theory provides an algebraic frame for the study of the confluence arising when the increment of a difference equation tends...
Source: http://arxiv.org/abs/math/0203274v1
Arxiv.org
by G. Besson; G. Courtois; S. Gallot
texts

eye 55

favorite 0

comment 0

We prove an extension of Milnor-Wood inequalities to a geometric situation. We study representations of the fundamental group of a compact manifold into the isometry group of a product of rank one spaces of the same dimension and show an upper bound on the volume of the representation. When the target group is the isometry group of the real hyperbolic space, we show the constance of the volume under deformations using the Schl\"afli formula and deduce a new and simple proof of a result of...
Source: http://arxiv.org/abs/math/0506425v2
Arxiv.org
texts

eye 60

favorite 0

comment 0

Several recent large length scale methods of detecting the topology of the Universe are briefly reviewed. Three-dimensional methods include those of Lehoucq, Luminet & Lachi\`eze-Rey (1996), Roukema (1996) and Roukema & Edge (1997). The two-dimensional ``circles'' method of Cornish, Spergel & Starkman (1996b) is also mentioned.
Source: http://arxiv.org/abs/astro-ph/9801225v1
Arxiv.org
by Alexander Grothendieck; Michele Raynaud
texts

eye 119

favorite 0

comment 0

Le texte pr\'esente les fondements d'une th\'eorie du groupe fondamental en G\'eom\'etrie Alg\'ebrique, dans le point de vue ``kroneckerien'' permettant de traiter sur le m\^eme pied le cas d'une vari\'et\'e alg\'ebrique au sens habituel, et celui d'un anneau des entiers d'un corps de nombres, par exemple. The text presents the foundations of a theory of the fundamental group in Algebraic Geometry from the Kronecker point of view, allowing one to treat on an equal footing the case of an...
Source: http://arxiv.org/abs/math/0206203v2
Arxiv.org
texts

eye 89

favorite 0

comment 0

In this thesis we have proved a conjecture about the moduli space SU_X(3) of semi-stable rank 3 vector bundles with trivial determinant on a genus 2 curve X, due to I. Dolgachev. Given X a smooth projective curve of genus 2, and the embedding of the jacobian JX into |3\Theta|, A. Coble proved, at the begining of XX century, that there exists a unique cubic hypersurface C in |3\Theta|* \simeq P^8, JX[3]-invariant and singular along JX. On the other hand, we have a map of degree 2 from SU_X(3)...
Source: http://arxiv.org/abs/math/0309019v2
Arxiv.org
texts

eye 78

favorite 0

comment 0

Nous \'etudions la nature arithm\'etique de $q$-analogues des valeurs $\zeta(s)$ de la fonction z\^eta de Riemann, notamment des valeurs des fonctions $\zeta_q(s)= \sum_{k=1} ^{\infty}q^k \sum_{d\mid k} ^{}d^{s-1}$, $s=1,2,...$, o{\`u} $q$ est un nombre complexe, $| q|
Source: http://arxiv.org/abs/math/0311033v1
Arxiv.org
texts

eye 103

favorite 0

comment 0

By underlying the commutation relation in a right-angled Coxeter group W, we recover the fact that right-angled Coxeter groups are rigid and we describe the second subgroup of Aut(W) that appears in the decomposition of Aut(W) into a semi-direct product established by J. Tits in "Sur le groupe des automorphismes de certains groupes de Coxeter" (Journal of Algebra 113, (1988), 346-357). ----- En mettant l'accent sur la relation de commutation dans un groupe de Coxeter a angles droits...
Source: http://arxiv.org/abs/math/0411575v3
Arxiv.org
by Bertrand Deroin; Victor Kleptsyn; Andres Navas
texts

eye 87

favorite 0

comment 0

Using probabilistic methods, we prove new rigidity results for groups and pseudo-groups of diffeomorphisms of one dimensional manifolds with intermediate regularity class ({\em i.e.} between $C^1$ and $C^2$). In particular, we demonstrate some generalizations of Denjoy's Theorem and the classical Kopell's Lemma for Abelian groups. After that, these techniques are applied to the study of codimension 1 foliations. We obtain for instance several generalized versions of Sacksteder's Theorem in...
Source: http://arxiv.org/abs/math/0506063v3
Arxiv.org
by Mohamed Saadbouh Mohamed Ahmed
texts

eye 53

favorite 0

comment 0

Let $\Phi $ be a Drinfeld $\mathbf{F}\_{q}[T]$-module of rank 2, over a finite field $L=\mathbf{F}\_{q^{n}}$. We will study the cyclic property of the structure $L^{\Phi}.$ We will prove that the latter is cyclic only for trivial extensions of $\mathbf{F}\_{q}$.
Source: http://arxiv.org/abs/math/0606418v2
Arxiv.org
texts

eye 69

favorite 0

comment 0

In this article we give a classification of the sub-groups in PSL(2,Z) and of the conjugacy classes of these sub-groups by the mean of an combinatorial invariant: some trivalent diagrams (dotted or not). We give explicit formulae enabling to count the number of isomorphism classes of these structures and of some of their variations, as function of the number of their arcs. Until now, the counting of non-dotted diagrams was an open problem, for it gives also the number of unrooted combinatorial...
Source: http://arxiv.org/abs/math/0702223v1
Arxiv.org
texts

eye 99

favorite 0

comment 0

We prove that, in the category F of functors between F\_2-vector spaces, the tensor product between the second non constant standard injective functor and an exterior power functor is artinian. The only cas known to date was the artinian character of this injective ; our result is a step in the study of the third non constant standard injective. We use the division functor by the identity functor and facts from modular representation theory of the symmetric groups to obtain this theorem by...
Source: http://arxiv.org/abs/math/0607595v1
Gallica
texts

eye 33

favorite 0

comment 0

Avec mode texte
Gallica
texts

eye 47

favorite 0

comment 0

Avec mode texte
Gallica
texts

eye 40

favorite 0

comment 0

Appartient à l’ensemble documentaire : VilledePa1
Appartient à l’ensemble documentaire : HNormand1
Topic: Sciences de la santé -- Histoire
Contient une table des matières
Topic: Cheval -- Élevage
Contient une table des matières
Topics: Cheval -- Ouvrages de vulgarisation, Équitation -- Ouvrages de vulgarisation
Collection : Bibliothèque religieuse, morale, littéraire pour l'enfance et la jeunesse
Comprend : À M. de Neufgermain..
Avec mode texte
Gallica
texts

eye 35

favorite 0

comment 0

Collection : Bibliothèque contemporaine
Contient une table des matières
Contient une table des matières
Comprend : Mémoire sur la vie de M. Olier et sur le séminaire de Saint-Sulpice..
Avec mode texte
Contient une table des matières
Contient une table des matières
Collection : Bibliothèque rose illustrée
Contient une table des matières
Avec mode texte
Avec mode texte
Topics: Elephant, Paris, Museum d'histoire naturelle, 1803
Appartient à l’ensemble documentaire : RhoneAlp1
Comprend : Histoire merveilleuse de Pierre Schlemihl / Chamisso ; Quentin Messis / Chamisso ; La danse des Willis / J. Mailáth
Gallica
texts

eye 36

favorite 0

comment 0

Contient une table des matières