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This thesis by Uledi Ngulo explores decomposition methods in the field of combinatorial optimization, a branch of mathematics that deals with optimizing complex problems often found in science and technology. The work focuses on decomposing these problems into simpler subproblems to improve solution methods. Key concepts include the development of a Lagrangian principle for discrete and non-convex optimization problems, analysis of duality gaps in set covering problems, and a study of bi-objective covering problems related to real-world applications like camera surveillance systems. The research aims to enhance the understanding and application of decomposition principles in optimization tasks. It is intended for an academic audience, particularly those interested in mathematical optimization techniques.
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This work introduces classical mechanics. It does so in an informal style with numerous fresh, modern, and inter-disciplinary applications assuming no prior knowledge of the necessary mathematics. The book provides a comprehensive and self-contained treatment of the subject matter up to the forefront of research in multiple areas.
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Constrained optimization --- Mathematical optimization --- Lagrangian functions
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Hydrodynamics --- Lagrangian functions --- Numerical analysis --- Congresses.
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This book deals with the foundations of classical physics from the "symplectic" point of view, and of quantum mechanics from the "metaplectic" point of view. The Bohmian interpretation of quantum mechanics is discussed. Phase space quantization is achieved using the "principle of the symplectic camel", which is a recently discovered deep topological property of Hamiltonian flows. The mathematical tools developed in this book are the theory of the metaplectic group, the Maslov index in a precise form, and the Leray index of a pair of Lagrangian planes. The concept of the "metatron" is introduc
Lagrangian functions. --- Geometric quantization. --- Maslov index.
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A concise but rigorous treatment of variational techniques, focussing primarily on Lagrangian and Hamiltonian systems, this book is ideal for physics, engineering and mathematics students. The book begins by applying Lagrange's equations to a number of mechanical systems. It introduces the concepts of generalized coordinates and generalized momentum. Following this the book turns to the calculus of variations to derive the Euler-Lagrange equations. It introduces Hamilton's principle and uses this throughout the book to derive further results. The Hamiltonian, Hamilton's equations, canonical transformations, Poisson brackets and Hamilton-Jacobi theory are considered next. The book concludes by discussing continuous Lagrangians and Hamiltonians and how they are related to field theory. Written in clear, simple language and featuring numerous worked examples and exercises to help students master the material, this book is a valuable supplement to courses in mechanics.
Mechanics, Analytic --- Lagrangian functions --- Hamiltonian systems
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In this paper the authors first develop various enhancements of the theory of spectral invariants of Hamiltonian Floer homology and of Entov-Polterovich theory of spectral symplectic quasi-states and quasi-morphisms by incorporating bulk deformations, i.e., deformations by ambient cycles of symplectic manifolds, of the Floer homology and quantum cohomology. Essentially the same kind of construction is independently carried out by Usher in a slightly less general context. Then the authors explore various applications of these enhancements to the symplectic topology, especially new construction of symplectic quasi-states, quasi-morphisms and new Lagrangian intersection results on toric and non-toric manifolds. The most novel part of this paper is its use of open-closed Gromov-Witten-Floer theory and its variant involving closed orbits of periodic Hamiltonian system to connect spectral invariants (with bulk deformation), symplectic quasi-states, quasi-morphism to the Lagrangian Floer theory (with bulk deformation). The authors use this open-closed Gromov-Witten-Floer theory to produce new examples. Using the calculation of Lagrangian Floer cohomology with bulk, they produce examples of compact symplectic manifolds (M,omega) which admits uncountably many independent quasi-morphisms widetilde{{m Ham}}(M,omega) o {mathbb{R}}. They also obtain a new intersection result for the Lagrangian submanifold in S^2 imes S^2.
Symplectic geometry --- Lagrangian functions. --- Floer homology.
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Operator theory --- Lagrangian functions --- Continuum mechanics --- Analyse numérique --- Analyse numérique.
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