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Homology theory --- Topological transformation groups

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In mathematical physics, the correspondence between quantum and classical mechanics is a central topic, which this book explores in more detail in the particular context of spin systems, that is, SU(2)-symmetric mechanical systems. A detailed presentation of quantum spin-j systems, with emphasis on the SO(3)-invariant decomposition of their operator algebras, is first followed by an introduction to the Poisson algebra of the classical spin system, and then by a similarly detailed examination of its SO(3)-invariant decomposition. The book next proceeds with a detailed and systematic study of general quantum-classical symbol correspondences for spin-j systems and their induced twisted products of functions on the 2-sphere. This original systematic presentation culminates with the study of twisted products in the asymptotic limit of high spin numbers. In the context of spin systems it shows how classical mechanics may or may not emerge as an asymptotic limit of quantum mechanics. The book will be a valuable guide for researchers in this field, and its self-contained approach also makes it a helpful resource for graduate students in mathematics and physics.

Quantum theory --- Lie groups --- Mathematical physics --- Mathematics. --- History. --- Data processing. --- Groups, Lie --- Lie algebras --- Symmetric spaces --- Topological groups --- Algebra. --- Quantum theory. --- Topological Groups. --- Global differential geometry. --- Non-associative Rings and Algebras. --- Quantum Physics. --- Topological Groups, Lie Groups. --- Differential Geometry. --- Geometry, Differential --- Groups, Topological --- Continuous groups --- Quantum dynamics --- Quantum mechanics --- Quantum physics --- Physics --- Mechanics --- Thermodynamics --- Mathematics --- Mathematical analysis --- Nonassociative rings. --- Rings (Algebra). --- Quantum physics. --- Topological groups. --- Lie groups. --- Differential geometry. --- Algebraic rings --- Ring theory --- Algebraic fields --- Rings (Algebra) --- Differential geometry

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In mathematical physics, the correspondence between quantum and classical mechanics is a central topic, which this book explores in more detail in the particular context of spin systems, that is, SU(2)-symmetric mechanical systems. A detailed presentation of quantum spin-j systems, with emphasis on the SO(3)-invariant decomposition of their operator algebras, is first followed by an introduction to the Poisson algebra of the classical spin system, and then by a similarly detailed examination of its SO(3)-invariant decomposition. The book next proceeds with a detailed and systematic study of general quantum-classical symbol correspondences for spin-j systems and their induced twisted products of functions on the 2-sphere. This original systematic presentation culminates with the study of twisted products in the asymptotic limit of high spin numbers. In the context of spin systems it shows how classical mechanics may or may not emerge as an asymptotic limit of quantum mechanics. The book will be a valuable guide for researchers in this field, and its self-contained approach also makes it a helpful resource for graduate students in mathematics and physics.

Ordered algebraic structures --- Algebra --- Differential geometry. Global analysis --- Topological groups. Lie groups --- Mathematics --- Quantum mechanics. Quantumfield theory --- algebra --- quantumfysica --- topologie (wiskunde) --- differentiaal geometrie --- wiskunde --- geometrie

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The Abel Symposium 2008 focused on the modern theory of differential equations and their applications in geometry, mechanics, and mathematical physics. Following the tradition of Monge, Abel and Lie, the scientific program emphasized the role of algebro-geometric methods, which nowadays permeate all mathematical models in natural and engineering sciences. The ideas of invariance and symmetry are of fundamental importance in the geometric approach to differential equations, with a serious impact coming from the area of integrable systems and field theories. This volume consists of original contributions and broad overview lectures of the participants of the Symposium. The papers in this volume present the modern approach to this classical subject.

Algebra --- Geometry --- Differential equations --- Mathematical analysis --- Mathematical physics --- differentiaalvergelijkingen --- algebra --- analyse (wiskunde) --- wiskunde --- fysica --- geometrie