Dissertations / Theses on the topic 'Lois de groupe birationnelles'
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Li, Shang. "An Equivariant Compactification for Adjoint Reductive Group Schemes." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASM028.
Full textWonderful compactifications of adjoint reductive groups over an algebraically closed field play an important role in algebraic geometry and representation theory. In this thesis, we construct an equivariant com- pactification for adjoint reductive groups over arbitrary base schemes. Our compactifications parameterize classical wonderful compactifications of De Concini and Pro- cesi as geometric fibers. Our construction is based on a variant of the Artin-Weil method of birational group laws, and, in the split case, dose not depend on the existence of the classical wonderful compactification over an algebraically closed field. In particular, our construction gives a new intrinsic construction of wonderful compac- tifications. The Picard group scheme of our compactifi- cations is computed. We also discuss several applications of our compactification in the study of torsors under reductive group schemes
Déserti, Julie. "Sur le groupe de Cremona : aspects algébriques etdynamiques." Phd thesis, Université Rennes 1, 2006. http://tel.archives-ouvertes.fr/tel-00125492.
Full textDymski, Nikodem. "Lois de conservation pour la modélisation de dynamiques de groupe." Thesis, Université Côte d'Azur (ComUE), 2019. http://www.theses.fr/2019AZUR4073.
Full textThis thesis is devoted to macroscopic traffic flow modelling, which describes traffic flow by variables averaged over multiple vehicles. It mainly focuses on a situation in which the maximum flow of cars is limited at a fixed point along the road. Thanks to such considerations, we can model traffic flow through toll gates or construction sites. From a mathematical point of view we consider systems of hyperbolic conservation laws with constraint condition. Research is based on three macroscopic models, namely Lighthill-Witham-Richards model (LWR), Aw-Rascle-Zhang model (ARZ) and phase transition model (PT). The aim of thesis is to establish the existence and properties of a weak solutions. The thesis consists of 6 chapters and 2 appendices. In the first chapter, we introduce basic ideas of traffic modelling. The second chapter is devoted to a detailed discussion of basic macroscopic traffic flow models. In the third chapter, we describe the LWR model with a local point constraint on the flow. The fourth chapter is devoted to ARZ model with local point constraint on the flow. We prove there the existence of the weak solutions, corresponding to a non-conservative Riemann solver, in the class of functions with bounded variation. The goal is obtained by showing the convergence of a sequence of approximate solutions constructed via the Wave Front Tracking method. In the fifth chapter, we describe two PT models with the local point constraint on the flow. Then we examine their consistency, L1loc-continuity and invariant domains. The remainder of the chapter is devoted to the existence result of a weak solution in the class of function with bounded variation for one of these models with a metastable phase. The goal is obtained by showing the convergence of a sequence of approximate solutions constructed via Wave Front Tracking method. The sixth chapter is devoted to two macroscopic models on road networks. The first is the LWR model with moving constraint on the flow and the second is the PT model introduced in the second chapter
Salaün, François. "Marche aléatoire sur un groupe libre : ensembles récurrents et lois limites conditionnellement à la sortie." Brest, 1999. http://www.theses.fr/1999BRES2012.
Full textEvseeva, Elena. "Représentations du groupe pseudo-orthogonal dans les espaces des formes différentielles homogènes." Thesis, Reims, 2016. http://www.theses.fr/2016REIMS035/document.
Full textIn this thesis we study representations of the Lorentz group acting on sectionsof the cotangent bundle over the isotropic cone. Using Fourier and Poisson transforms we construct explicitly all the symmetry breaking operators that appear in branching laws of tensor products of such representations
Bode, Michael. "Le groupe international de sociétés le système de conflit de lois en droit comparé français et allemand." Bern Berlin Bruxelles Frankfurt, M. New York, NY Oxford Wien Lang, 2009. http://d-nb.info/100000399X/04.
Full textBode, Michael. "Le groupe international de sociétés : le système du conflit de lois en droit comparé français et allemand." Paris 2, 2009. http://www.theses.fr/2009PA020026.
Full textPham, Van thang. "Contributions à la commande prédictive des systèmes de lois de conservation." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00770985.
Full textDutercq, Sébastien. "Métastabilité dans les systèmes avec lois de conservation." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2016/document.
Full textThis thesis contains an abstract with mathematical formulae. You can consult it via the complete text of the document in the back page
Ben, Slimen Bilel. "Conception de lois de commande structurées (hiérarchisées, décentralisées) pour les chaînes de traction pilotées." Phd thesis, Université de Nantes, 2011. http://tel.archives-ouvertes.fr/tel-00633942.
Full textPham, Van Thang. "Contributions à la commande prédictive des systèmes de lois de conservation." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENT051/document.
Full textThe predictive control or Receding Horizon Optimal Control (RHOC) is becoming increasingly popular in many practical applications due to its significant advantages such as the stabilization and constraints handling. It has been well studied for finite dimensional systems even in the nonlinear case. However, its extension to infinite dimensional systems has not received much attention from researchers. This thesis proposes contributions on the application of this approach to systems of conservation laws. We present a complete proof of stability of RHOC for some classes of infinite dimensional systems. This result is then used for 2x2 hyperbolic systems with boundary control, and applied to an irrigation canal. We also propose the extension of this strategy to networks of cascaded 2x2 hyperbolic systems with an application to a set of connected irrigation canals. Furthermore, we study the benefits of RHOC in the context of nonlinear and semi-linear systems in particular with respect to the problem of shocks. All theoretical analyzes are validated by simulation in order to illustrate the effectiveness of the proposed approach
Zhao, Sheng-Yuan. "Groupes kleiniens birationnels en dimension deux." Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S012.
Full textIn this thesis I study a generalisation of Kleinian groups in the setting of complex algebraic geometry. The problem can also be seen as uniformization of projective varieties under an algebro-geometric hypothesis on the group of deck transformations. I give a classification of birational Kleinian groups in dimension two. It implements an interaction between birational transformations of surfaces,Kähler, groups, holomorphic foliations on complex surfaces, and Teichmüller spaces
Berriri, Mohamed. "Synthèse de lois de commande optimales pour les systèmes à retard sur l'entrée : application au contrôle actif d'un groupe motopropulseur en vue d'un agrément de conduite amélioré." Nantes, 2008. http://www.theses.fr/2008NANT2017.
Full textDriveability is one of most important aspect of customer expectations in the context of intense competition between vehicle manufacturers. At the present, the most common way to improve driveability is by calibrating test vehicles. This procedure is time and cost consuming and not repeatable. The aim of this work is to improve passenger comfort by active damping of driveline oscillations using engine as an actuator. To suit the automotive industry, the cost for the vehicle must be minimized; the control methodology should be cheap in terms of computational requirements and the development time. This work resulted on:-Formalization of one underlying control problem: predictive control for time delay systems (using generalized Smith predictor or state-predictor) and its implementation were particularly studied. - A proposition of a complete generic development cycle. It includes identification, control design, simulation and experimentation steps. The main advantage and originality of the proposed approach consists in the simplicity of the design and the possibility to refine the controller tuning directly on vehicle. As the tuning parameters are few and with a clear meaning, the benefit over previous approach is a reduced development cost and time. Experiments with the resulting control on test cars have are very successful success, showing both good performance and robustness properties; body longitudinal vibrations are greatly reduced thanks to active control
Berriri, Mohamed Chevrel Philippe Yagoubi Mohamed. "Synthèse de lois de commande optimales pour les systèmes à retard sur l'entrée application au contrôle actif d'un groupe motopropulseur en vue d'un agrément de conduite amélioré /." [S.l.] : [s.n.], 2008. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=44331.
Full textAbu, El Eed Mohamed. "Les dispositions des lois portant sur le blanchiment d’argent : esquisse d'une phénoménologie comparée du droit français et du droit lybien." Thesis, Toulouse 1, 2016. http://www.theses.fr/2016TOU10025.
Full textMoney laundering is a crime both national and international perspective; it is a great problem for all countries of the world as representing one of the most serious current offenses. Hence the study of crime character that takes money laundering in international law and in national laws, in particular French and Libyan. We divided our research into three parts; the first deals with the legal system of money laundering crime by addressing in the first chapter the concept of money laundering phenomenon in its definition, its characteristics, the different stages of the offense and the effects on national and international; and in the second chapter studied the sources of the money issues including drug trafficking laundering and the fight against terrorism, corruption and organized crime. In the second part, we examined mechanisms for the fight against money laundering, which shows a high rate of crime at the international level; and, looking in the first chapter the most remarkable international conventions, European regulations, international organizations such as the FATF, and the final order of the 2015 European Union for the prevention of the use of the financial system for the purpose of money laundering or terrorist financing. The second chapter of this second part dealt with the money laundering at the national level by studying mechanisms to fight against this scourge and the role of TRACFIN in French law; and in Libyan law, the role of the FIU in the fight against this crime. The last part, meanwhile, tackles in the first point this crime at the importance of comparative law sketch on a contemporary theme in terms of the lessons of a comparison (right in power, act right) and relationship between human rights and humanitarian law with the market; was also discussed the opinion of philosophers focused on money and more precisely the one contained in the philosophy of Montesquieu in this regard. In the second point of this part, we studied the limits of a comparison between the religions, and the crime of money laundering in Islamic law who hired a struggle to the following address specific control methods
Lader, Olivier. "Une résolution projective pour le second groupe de Morava pour p ≥ 5 et applications." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-00875761.
Full textRingot-Namer, Constantin. "La loi applicable à la responsabilité du fait des produits." Thesis, Université de Lorraine, 2020. http://www.theses.fr/2020LORR0125.
Full textDetermining the applicable law to products liability requires to resolve the complex issue of the appropriate connection. In France, where The Hague Convention of 2 October 1973 has been into force for forty years, the question of the appropriate bilateral connection is more acute with the introduction of the article 5 of the Rome II Regulation. Would this not be a good opportunity to further the debate about the appropriate connection for products liability? Is this new connection more relevant than the Convention’s one? Is the introduction in the French legal landscape of a new bilateral choice-of-law rule for products liability not an invitation to ask whether a specific connection for products liability is needed? Is the lex loci delicti rule not enough when it comes to a damage caused by a product? Besides, when compared with the United States model, one could even subversively argue whether to set general choice-of-law principles so to let the juge resolving the conflict of laws issue on a case-by-case basis. Undoubtedly, since the introduction of the article 5 of the Rome II Regulation within the French legal landscape the research of the appropriate connection is to be led again. But identifying the appropriate connection is not enough to determine the law to products liability. Assuming that such a connection is identified, could it be easily applied before a French judge? Would it not be in competition with the transposing acts of the 1985 Directive as overriding mandatory provisions? Would its application not interfere with the free movement of goods within the European Union? How could it be applied in the context of an existing conflict before the French judge between the Hague Convention of 2 October 1973 and the article 5 of the Rome II Regulation? Would this connection be compatible with the collective nature of the French class action? As we can see, determining in an appropriate manner the applicable law to products liability before the French judge requires not only to settle the renewed debate of the appropriate connection but also to face new challenges concerning the application of the connection
Caillet, Marie-Caroline. "Le droit à l'épreuve de la responsabilité sociétale des entreprises : étude à partir des entreprises transnationales." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0234/document.
Full textCompanies are now at the heart of global trade. These economic exchanges result in the establishment of commercial relationships, from which may emerge structures that are often complex and difficult to grapple with under the law: transnational corporations. While no satisfactory legal framework has yet been established to frame their work, paradoxically CSR gives rise to standards, tools and instruments to ensure their accountability. The study of the social responsibility of transnational corporations through the prism of the law actually reveals the emergence of a hybrid framework of regulation: CSR standards influence the law, forcing the law in turn to take note of these standards. This exchange allows us to handle a transnational business through a new approach derived from CSR standards, essentially through its organisation and functions. The relationship between a company and its business partners then becomes a potential basis for the law, rather than its status or its legal structure, from which can be derived responsibilities. Once a transnational corporation is seized, a legal framework adapted to its complex structure can come to light. The study of CSR standards reveals an enrichment of the rules applicable to transnational corporations and a potential strengthening of their legal liability, based on a preventive and joint and several approach of the law of responsibility. Ignoring the problems posed by the lack of legal status, CSR allows for the regulation of transnational enterprises through their commercial relations and provides a basis for the development of a new legal standard of social conduct, giving rise to individual and collective liability based on a duty of care
Lafargue, Marie. "Les relations de travail dans l'entreprise transnationale." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0279.
Full textTransnational companies now stand as leading economic powers in aglobalisation context. Stripped of any legal personality, they are only partly bound by thenational laws. Aside from supranational law, which is incomplete provides only partialregulation, labour relations within globalised companies remain largely bound by nationallaws while the paradigms of labour law have barely evolved in order to adjust to theirsingularity. The nature of the law that governs those professional relations is therefore notcommensurate to their transnational reality.The deficiencies of the current framework for analysis thus compel researchers to gobeyond the twofold boundaries of legal systems and legal entities in order to develop suitableglobal solutions. A positivist, forward-looking analysis of the law reveals the existence of anadaptation process that is already underway but which must also be extended andstrengthened.It is therefore a matter of establishing a legal adjustment principle within those labourrelations, which reveals the identity of the transnational: transnationality is an expression ofpluralism. Legal adaptation assumes, on the one hand, that companies be reconstructed asorganisations and that a synergy be established with other players in the field of globalgovernance. The alignment trend implies, on the other hand, the birth of a "post-modern",pluralist global law, resting on a foundation of fundamental rights. It is thus at the cost of suchdevelopments that an adapted regulation of labour relations will be achieved withintransnational companies, together with the emergence of a globalised social law
Amaro, Rafael. "Le contentieux privé des pratiques anticoncurrentielles : Étude des contentieux privés autonome et complémentaire devant les juridictions judiciaires." Thesis, Paris 5, 2012. http://www.theses.fr/2012PA05D014.
Full textPas de résumé en anglais
Pelland, Marie-Andrée. "Allégations d'entorse aux lois : effets sur la réalité sociale d'un groupe de mormons polygames canadiens." Thèse, 2007. http://hdl.handle.net/1866/18178.
Full textLévesque, Sarah-Émilie. "Étude sociojuridique des représentations de la laïcité indienne et des positionnements à l’égard de lois différenciées selon l’appartenance religieuse." Thèse, 2013. http://hdl.handle.net/1866/10657.
Full textIn 1947, India became a secular democratic republic proposing a new organization of society. Family laws, established according to religious affiliation and affirmative action policies, were recognized by the state without unanimity. In the political climate of the nineties, such secularism and group rights were questioned. From a socio-historical perspective, this research focuses on the practices & representations of Indian secularism and its potential relationship with laws differentiated by religious affiliation. Based on the notion of equality, the present research explores the rights and obligations associated with the just approach to religious diversity in independent India. Particular attention is given to the contemporary period and to Indian Muslims’ group rights. In this research, legal representations that emerge from the analysis of public and intellectual debates are paralleled with the viewpoints of seventeen of Kolkata’s middle-class informants (summer 2011). Using this approach, the discourse analysis informs the reader on the conception of secularism discussed in contemporary, independent India. Recognising the value of diversity, duties and self regulation, the majority of respondents reject differentiated rights for Muslims. Two approaches of the state emerge; one in which the State is more directive and one which provides more autonomy to the group.