fatuity
发表于 2025-3-28 17:25:58
Introduction, prove many of the results presented in this book. Thus one need to have a solid understanding of differential forms, which turn out to be certain kinds of skew-symmetric (also called alternating) tensors. Differential forms have two main roles:
的是兄弟
发表于 2025-3-28 20:01:59
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背书
发表于 2025-3-28 23:09:00
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约会
发表于 2025-3-29 05:29:34
Integration on Manifolds, we explain how differential forms defined on an open subset of . are integrated. Then, if . is a smooth manifold of dimension ., and if . is an .-form on . (with compact support), the integral ∫.. is defined by patching together the integrals defined on small-enough open subsets covering . using a
Irascible
发表于 2025-3-29 08:00:56
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GROUP
发表于 2025-3-29 11:37:50
Operators on Riemannian Manifolds: Hodge Laplacian, Laplace-Beltrami Laplacian, the Bochner Laplacifusion or wave propagation. Therefore, it is highly desirable to generalize the Laplacian to functions defined on a manifold. Furthermore, in the late 1930s, Georges de Rham (inspired by Élie Cartan) realized that it was fruitful to define a version of the Laplacian operating on differential forms,
青春期
发表于 2025-3-29 18:57:57
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原来
发表于 2025-3-29 19:47:48
Clifford Algebras, Clifford Groups, and the Groups ,(,) and ,(,),ction of the unit complex numbers .(1) on . and the action of the unit quaternions .(2) on . (., the action is defined in terms of multiplication in a larger algebra containing both the group .(.) and .). The group .(.), called a ., is defined as a certain subgroup of units of an algebra Cl., the .
蛙鸣声
发表于 2025-3-30 00:42:16
C. Jiménez,F. X. Niell,J. A. Fernándezmited clinical evidence showed that natural or artificial materials could be used as scaffolds for urethral repair. Urinary tissue engineering is still in the immature stage, and the safety, efficacy, and cost-effectiveness of scaffolds must be evaluated to allow further study.
cardiopulmonary
发表于 2025-3-30 06:26:07
Shahram Khazaei,Simon Fischer,Willi Meiers classical Maxwell theory with quantum theory of atoms, mol.This book consists of two parts. Part A (Chapters 1-3) is an introduction to the physics of conducting solids, while Part B (Chapters 4-10) is an introduction to the theory of electromagnetic fields and waves. .The book is intended to intr