Zum Konvergenzprozess der mittel- und osteuropäischen EU-Beitrittsländer / Harald Hagemann, Susanne Reichart

• Record Nr.: UNINA9910563020203321
• Autore: Reichart Susanne
• Pubbl/distr/stampa: Frankfurt a.M, : PH02, 2018
• Edizione: [1st, New ed.]
• Descrizione fisica: 1 online resource (352 p.) : , EB00
• Collana: Hohenheimer volkswirtschaftliche Schriften ; 51
• Soggetti: Economic theory & philosophy; Economic growth; International economics
• Lingua di pubblicazione: Tedesco
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Peter Lang GmbH, Internationaler Verlag der Wissenschaften
• Nota di contenuto: Aus dem Inhalt: Osteuropa in Zahlen - Konvergenzmechanismen in der neoklassischen Wachstumstheorie - Divergenzmechanismen in der Theorie endogenen Wachstums - Wachstums- und Konvergenzeffekte durch Integration - Die «Social Capability» der MOEL - Konvergenzprognosen und Fazit.
• Sommario/riassunto: Die Erweiterung der Europäischen Union um acht mittel- und osteuropäische Länder am 1. Mai 2004 und die geplante Aufnahme von zwei weiteren Ländern im Jahr 2007 stellt eine große Herausforderung für Europa dar. Die Besonderheit der EU-Osterweiterung liegt insbesondere im niedrigen Einkommensniveau der beitretenden Volkswirtschaften. Im Mittelpunkt der Arbeit steht aus diesem Grund unter Zugrundelegung der Ergebnisse der neoklassischen Wachstumstheorie sowie der Theorie endogenen Wachstums die Frage nach Wahrscheinlichkeit, Ausmaß und Geschwindigkeit eines positiven Konvergenzprozesses im Rahmen der Europäischen Integration. Neben dem Konvergenzpotenzial, welches sich in Folge der Integration der MOEL in den Europäischen Wirtschaftsraum ergibt, stehen vor allem die jeweiligen Voraussetzungen in den EU-Beitrittsländern im Vordergrund, die in Anlehnung an das Konzept der «Social Capability» von Moses Abramovitz untersucht werden.

Polynomial Automorphisms and the Jacobian Conjecture : New Results from the Beginning of the 21st Century / / by Arno van den Essen, Shigeru Kuroda, Anthony J. Crachiola

• Record Nr.: UNINA9910484880603321
• Autore: Essen A. R. P. van den (Arnoldus Richardus Petrus van den), <1951->
• Pubbl/distr/stampa: Cham : , : Springer International Publishing : , : Imprint : Birkhäuser, , 2021
• ISBN: 3-030-60535-3
• Edizione: [1st ed. 2021.]
• Descrizione fisica: 1 online resource (197 pages) : illustrations
• Collana: Frontiers in Mathematics, , 1660-8054
• Disciplina: 516.35
• Soggetti: Algebraic geometry; Algebra; Mathematics; Algebraic Geometry
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Intro -- Preface -- Acknowledgments -- Contents -- 1 The Shestakov-Umirbaev Theory and Nagata's Conjecture -- 1.1 The Shestakov-Umirbaev Theory -- 1.1.1 Nagata's Conjecture -- 1.1.2 Weighted Grading -- 1.1.3 Initial Algebras and Elementary Reductions -- 1.1.4 Wildness Criterion -- 1.2 Structure of the Proof -- 1.2.1 Key Propositions -- 1.2.2 Induction -- 1.2.3 Proof of Claim A -- 1.2.4 Proof of Claim B -- Summary of Sect.1.2 -- 1.3 Degree Inequalities -- 1.3.1 Differentials -- 1.3.2 Shestakov-Umirbaev Inequality -- 1.3.3 Useful Consequences -- 1.3.4 Exercises -- 1.3.5 Degrees of Cofactor Expansions -- 1.4 Weak Shestakov-Umirbaev Condition -- 1.4.1 Description of g1 and g2 -- 1.4.2 Degree Estimations -- 1.5 Completion of the Proof -- 1.6 How to Find Reductions -- 1.6.1 Elementary Reduction -- 1.6.2 Shestakov-Umirbaev Reduction -- 2 Counterexamples to Hilbert's Fourteenth Problem -- 2.1 Introduction -- 2.2 Main Theorem -- 2.2.1 Construction -- 2.2.2 A Sufficient Condition on t2,...,tn -- 2.2.3 Example and Remarks -- 2.3 Criterion for Non-finite Generation -- 2.4 Proof of Theorem 2.2.4, Part I -- 2.5 Proof of Theorem 2.2.4, Part II -- 2.6 Application (1): Derivations -- 2.7 Application (2): Invariant Fields -- 3 Prime Characteristic Methods ; and the Cancellation Problem -- 3.1 The Makar-Limanov and Derksen Invariants -- 3.2 Exponential Maps -- 3.3 Cancellation in Dimensions One and Two -- 3.4 Cancellation in Dimensions Three and Higher -- 4 The Jacobian Conjecture: New Equivalences -- 4.1 Preliminaries: Exterior Forms -- 4.2 The Canonical Poisson Algebra and the Poisson Conjecture -- 4.3 The Weyl Algebra and the Dixmier Conjecture -- Applications to the Case that R is a Domain -- 4.4 The Equivalence of the Dixmier, Jacobian, and Poisson Conjectures -- 4.5 A p-Adic Formulation of the Jacobian Conjecture and the Unimodular Conjecture -- Transitivity.; Keller Maps and the Unimodular Conjecture -- The Unimodular Conjecture over Zp -- 4.6 A Mysterious Faulty Proof of the Jacobian Conjecture -- 5 Mathieu-Zhao Spaces -- 5.1 Generalizing the Jacobian Conjecture -- 5.2 Mathieu-Zhao Spaces: Definition and Examples -- 5.3 Zhao's Idempotency Theorem -- 5.4 Orthogonal Polynomials and MZ-Spaces -- Orthogonal Polynomials -- 5.5 The Duistermaat-van der Kallen Theorem -- Polytopes -- The Density Theorem -- Applications of the Density Theorem -- Generalizing the Duistermaat-van der Kallen Theorems -- 5.6 The Generalized Vanishing Conjecture -- 5.7 The Image Conjecture -- 5.8 MZ-Spaces of Matrices of Codimension One -- Some Corrections to E1 -- Bibliography -- Index.
• Sommario/riassunto: This book is an extension to Arno van den Essen's Polynomial Automorphisms and the Jacobian Conjecture published in 2000. Many new exciting results have been obtained in the past two decades, including the solution of Nagata's Conjecture, the complete solution of Hilbert's fourteenth problem, the equivalence of the Jacobian Conjecture and the Dixmier Conjecture, the symmetric reduction of the Jacobian Conjecture, the theory of Mathieu-Zhao spaces and counterexamples to the Cancellation problem in positive characteristic. These and many more results are discussed in detail in this work. The book is aimed at graduate students and researchers in the field of Affine Algebraic Geometry. Exercises are included at the end of each section.