Disk199
发表于 2025-3-23 11:29:46
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终端
发表于 2025-3-23 15:59:35
https://doi.org/10.1007/978-3-7643-8933-8ion of its arguments. Throughout this section we will consider arbitrary vector fields ., which extend continuously and differentiably to ℊ., with . . . . being .(1). In particular, in several calculations we will not assume that . is a Killing vector of the background unless explicitly stated otherwise.
情感脆弱
发表于 2025-3-23 22:04:12
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obligation
发表于 2025-3-24 01:11:51
Book 2002eld, as well as of the dynamics of the gravitational field. The authors construct such a framework extending the previous work of Kijowski and Tulczyjew. They start by reviewing some elementary facts concerning Hamiltonian dynamical systems and then describe the geometric Hamiltonian framework, adeq
LIMIT
发表于 2025-3-24 02:29:05
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独裁政府
发表于 2025-3-24 06:35:32
Preliminaries,case would involve delicate considerations concerning the manifold structure of the spaces at hand; in particular, one would have to introduce the notion of tangent vectors, differential forms, as well as an appropriate notion of non-degeneracy and closedness of the symplectic form. We do not wish t
SUE
发表于 2025-3-24 13:17:11
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气候
发表于 2025-3-24 15:09:27
Radiating scalar fields,scalar fields on . can be viewed as sections of a trivial bundle . In this theory a natural choice for the Lagrangian is the one, which is manifestly invariant under Poincaré transformations: .% MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfKttLearuqr1ngBPrgarmWu51MyVXgatC% vAUfeBSjuyZL2yd9gzLbvyNv2Ca
喊叫
发表于 2025-3-24 20:47:17
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Detonate
发表于 2025-3-25 00:29:34
The Physical Chemistry of MEMBRANESmasses; in field theories one is interested in the energy of field configurations. A unified treatment of this question, which applies both to mechanics and to field theory, proceeds through a Hamiltonian formalism. We will shortly review below how such a procedure is carried out in the theory of sc