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Academic literature on the topic 'Algèbre de Leibniz'
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Journal articles on the topic "Algèbre de Leibniz"
Livernet, Muriel. "Homotopie rationnelle des algèbres de Leibniz." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 325, no. 8 (October 1997): 819–23. http://dx.doi.org/10.1016/s0764-4442(97)80119-x.
Full textCuvier, C. "Algèbres de Leibnitz : définitions, propriétés." Annales scientifiques de l'École normale supérieure 27, no. 1 (1994): 1–45. http://dx.doi.org/10.24033/asens.1687.
Full textDissertations / Theses on the topic "Algèbre de Leibniz"
Oudom, Jean-Michel. "Cogèbres de Leibniz duales et homologie des algèbres de Leibniz." Montpellier 2, 1997. http://www.theses.fr/1997MON20015.
Full textCovez, Simon. "L'intégration locale des algèbres de Leibniz." Phd thesis, Université de Nantes, 2010. http://tel.archives-ouvertes.fr/tel-00495469.
Full textBeaudouin, Thomas. "Etude de la cohomologie d'algèbres de Leibniz via des suites spectrales." Thesis, Nantes, 2017. http://www.theses.fr/2017NANT4102/document.
Full textThis thesis is devoted to the study of different spectral sequences for the cohomology of Leibniz alebras in general or in certain specific examples. Some of the results are motivated by work of G.Hochschild and J.-P. Serre for Lie algebras and groups as well as the thesis of A.V. Gnedbaye on the homology of Leibniz algebras with values in a special kind of modules. In the first chapter we define the notion of aLeibniz algebras as a generalization of a Lie algebras with a non-antisymmetric bracket. We also prove some basic properties of Leibniz algebras. The second chapter is a general introduction to spectral sequences, especially those defined from a filtration of a complex. Among other topics, we consider the notion of convergence of a spectral sequence. In the third chapter four different filtrations of Loday’s complex defining Leibniz cohomology are studied. We compute the first pages for the spectral sequences arising from each of these filtrations. As a consequence we derive some properties of Leibniz cohomology. The last chapter give some other applications of the results obtain in Chapter 3
Mabrouk, Sami. "Algèbres Hom-Nambu quadratiques et Cohomologie des algèbres Hom-Nambu-Lie multiplicatives." Thesis, Mulhouse, 2012. http://www.theses.fr/2012MULH7311/document.
Full textThe aim of this thesis is to study representation theory and cohomology of n-ary Hom-Nambu-Lie algebras, as well as quadratic structures on these algebras. It is organized as follows.• Chapter 1. n-ary Hom-Nambu algebras : in the first section we recall the definitions of n-ary Hom-Nambu algebras and n-ary Hom-Nambu-Lie algebras, introduced by Ataguema, Makhlouf and Silvestrov and provide some key constructions. These algebras correspond to a generalized version by twisting of n-ary Nambu algebras and Nambu-Lie algebras which are called Filippov algebras. We deal in this chapter with a subclass of n-ary Hom-Nambu algebras called multiplicative n-ary Hom-Nambu algebras. In Section 1.2, we recall the list of 3-dimensional ternary Hom-Nambu-Lie algebras of special type corresponding to diagonal homomorphisms. In Section 1.4 we show different construction procedures. We recall the construction procedures by twisting principles and provide some new constructions using for example the centroid. The first twisting principle, introduced for binary case, was extend to n-ary case. The second twisting principle was introduced for binary algebras. We will extend it to n-ary case in the sequel. Also we recall a construction by tensor product of symmetric totally n-ary Hom-associative algebra by an n-ary Hom-Nambu algebra. In Section 1.5, we extend representation theory of Hom-Lie algebras to the n-ary case and discuss the derivations, αk-derivations and central derivations. The last section of chapter 1 is dedicated to ternary q-Virasoro-Witt algebras. We recall constructions of infinite dimensional ternary Hom-Nambu algebras.• Chapter 2. Cohomology of n-ary multiplicative Hom-Nambu algebras : InSection 2.1. We define a central extension. In the second Section we show that for an n-ary Hom-Nambu-Lie algebra N, the space ∧n−1 N carries a structure of Hom-Leibniz algebra and we dene a cohomology which is suitable for the study of one parameter formal deformations of n-ary Hom-Nambu-Lie algebras. In Section 2.4, we extend to n-ary multiplicative Hom-Nambu-Lie algebras the Takhtajan's construction of a cohomology of ternary Nambu-Lie algebras starting from Chevalley-Eilenberg cohomology of binary Lie algebras. The cohomology of multiplicative Hom-Lie algebras. The cohomology complex for Leibniz algebras was defined by Loday and Pirashvili.• Chapter 3. Quadratic n-ary Hom-Nambu algebras : In the first section we introduce a class of Hom-Nambu-Lie algebras which possess an inner product. In Section 3.3, we provide some constructions of Hom-quadratic Hom-Nambu-Lie algebras starting from an ordinary Nambu-Lie algebra and from tensor product of Hom-quadratic commutative Hom-associative algebra and Hom-quadratic Hom-Nambu-Lie algebra. In Section 3.5, we provide a construction of n-ary Hom-Nambu algebra L which is a generalization of the trivial T∗-extension. In Section 3.6, we give a construction of ternary algebra arising from quadratic Lie algebra. In Section 3.7, we construct quadratic n-ary Hom-Nambu algebras involving elements of the centroid of n-ary Nambu algebras
Houg, Morgan. "Les recherches arithmétiques de Leibniz à Paris : sur certaines questions de nombres dans la seconde moitié du XVIIe siècle." Thesis, Université de Paris (2019-....), 2019. http://www.theses.fr/2019UNIP7172.
Full textUpon his arrival in Paris, G. W. Leibniz met many scientists. Through discussions and debates with them, he acquired knowledge of mathematics. We have focused here on his work in arithmetic, which in 1672 is dominated to a large extent, by a branched Diophantine problem that requires a significant use of algebra to be solved. While some credible studies have been published on this problem we’ve aimed at trying to go further than a mere description of failed attempts at solving this problem, known as the “sixsquare problem”. We have sought to show that Leibniz engaged in depth with this subject. Based on mathematical studies published by the Berlin Academy of Sciences, we have conducted parallel research on numbers by Leibniz, stemming from these attempts. By studying the correspondences of scholars from the late 17th century, we have been able to illustrate advances in the resolution of the problem, and we have also used them to show the way Leibniz gradually came to neglect the problem as found new ways to work in arithmetic. As a result, this study proposes a reinterpretation of the way the six-square problem was constructed by its creator, Jacques Ozanam. We’ve also insisted on the fact that the resolution was closely linked to two elements, one mathematical, the other historical, which Leibniz did not master: algebraic squaring methods and the preparation of a book by Ozanam, Diophante. These two factors set Leibniz back, and sharpened his dedication to his goal as soon as he succeeded in finding, in the burdensome factorization and development theories he had developed for the six-square problem, some properties of the divisibility of numbers. Finally, we have endeavored to examine these works to portray Leibniz as an arithmetician who, in particular, wrote original texts on prime numbers and even on their repartition. Thus we show that the history of Leibniz’s arithmetical practice in Paris is closely linked to his own history as a mathematician, and that it bears witness to his ability to gain knowledge, and then to go further than the expertise of his time, thereby contributing to his own development as a researcher
Cuvier, Christian. "Homologie des algèbres de Leibnitz." Université Louis Pasteur (Strasbourg) (1971-2008), 1991. http://www.theses.fr/1991STR13001.
Full textHidri, Samiha. "Formes bilinéaires invariantes sur les algèbres de Leibniz et les systèmes triples de Lie (resp. Jordan)." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0237/document.
Full textIn this thesis, we study the stucture of several types of algebras endowed with Symmetric, non degenerate and invariant bilinear forms. In the first part, we study quadratic Leibniz algebras. First, we prove that these algebras are symmetric. Then, we use the T*-extension and the double extension to prove some properties of this type of Leibniz algebras. Besides, since we observe that the skew-symmetry of the Leibniz bracket gives rise to other types of invariance for a bilinear form on a Leibniz algebra: The left invariance and the right invariance. We focus on the study of left (resp. right) Leibniz algebras with symmetric, non degenerate and left (resp. right) invariant bilinear form. In particular, we prove that these algebras are Lie admissibles. The second part of this work is dedicated to the study of quadratic Lie triple systems and pseudo-euclidien Jordan triple systems. We start by giving an inductive description of quadratic Lie triple systems using double extension. Next, we introduce the T*-extension of Jordan triple systems. Finally, we give new caracterizations of semi-simple Jordan triple systems among pseudo-euclidian Jordan triple systems
Lebed, Victoria. "Objets tressés : une étude unificatrice de structures algébriques et une catégorification des tresses virtuelles." Phd thesis, Université Paris-Diderot - Paris VII, 2012. http://tel.archives-ouvertes.fr/tel-00775857.
Full textBurgunder, Emily. "Bigèbres généralisées : de la conjecture de Kashiwara-Vergne aux complexes de graphes de Kontsevich." Montpellier 2, 2008. http://www.theses.fr/2008MON20248.
Full textThis thesis contains four articles developed around three themes : the Kashiwara-Vergne conjecture, Kontsevich's graph complex and magmatic bialgebras. The results obtained are linked by the notion of generalised bialgebras and their idempotents: in the first case we use the properties of classical bialgebras and in the second, a structure theorem for Zinbiel-associatives bialgebras. The main result of the first article is to construct explicitly all the solutions of the first equation of Kashiwara-Vergne conjecture, using the interplay between the Eulerian idempotent and the Dynkin idempotent. In second chapter we generalise the Kontsevich's theorem that computes the Lie homology of vector fields on a formal manifold. Indeed, we prove that the Leibniz homology of these symplectic vector fields on a formal manifold can be reconstructed thanks to the homology associated to a new type of graphs: the symmetric graphs. The third part contains two articles on magmatic bialgebras. In the first one, we prove a structure theorem which permits to reconstruct any infinite magmatic bialgebra through its primitives. In collaboration with Ralf Holtkamp, we extend this result to partial magmatic bialgebras and we construct a new type of operad that encodes the algebraic structure satisfied by the primitives