黎曼几何 [Riemannian Geometry] 下载 mobi epub pdf 电子书 2024

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　　《黎曼几何》非常值得一读。

内容简介

　　The object of this book is to familiarize the reader with the basic language of and some fundamental theorems in Riemannian Geometry. To avoid referring to previous knowledge of differentiable manifolds， we include Chapter 0， which contains those concepts and results on differentiable manifolds which are used in an essential way in the rest of the book。
　　The first four chapters of the book present the basic concepts of Riemannian Geometry (Riemannian metrics， Riemannian connections， geodesics and curvature). A good part of the study of Riemannian Geometry consists of understanding the relationship between geodesics and curvature. Jacobi fields， an essential tool for this understanding， are introduced in Chapter 5. In Chapter 6 we introduce the second fundamental form associated with an isometric immersion， and prove a generalization of the Theorem Egregium of Gauss. This allows us to relate the notion of curvature in Riemannian manifolds to the classical concept of Gaussian curvature for surfaces。

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目录

Preface to the first edition
Preface to the second edition
Preface to the English edition
How to use this book
CHAPTER 0-DIFFERENTIABLE MANIFOLDS
1. Introduction
2. Differentiable manifolds；tangent space
3. Immersions and embeddings；examples
4. Other examples of manifolds，Orientation
5. Vector fields； brackets，Topology of manifolds

CHAPTER 1-RIEMANNIAN METRICS
1. Introduction
2. Riemannian Metrics

CHAPTER 2-AFFINE CONNECTIONS；RIEMANNIAN CONNECTIONS
1. Introduction
2. Affine connections
3. Riemannian connections

CHAPTER 3-GEODESICS；CONVEX NEIGHBORHOODS
1．Introduction
2．The geodesic flow
3．Minimizing properties ofgeodesics
4．Convex neighborhoods

CHAPTER 4-CURVATURE
1．Introduction
2．Curvature
3．Sectional curvature
4．Ricci curvature and 8calar curvature
5．Tensors 0n Riemannian manifoids

CHAPTER 5-JACOBI FIELDS
1．Introduction
2．The Jacobi equation
3．Conjugate points

CHAPTER 6-ISOMETRIC IMMERSl0NS
1．Introduction．
2．The second fundamental form
3．The fundarnental equations

CHAPTER 7-COMPLETE MANIFoLDS；HOPF-RINOW AND HADAMARD THEOREMS
1．Introduction．
2．Complete manifolds；Hopf-Rinow Theorem．
3．The Theorem of Hadamazd．

CHAPTER 8-SPACES 0F CONSTANT CURVATURE
1．Introduction
2．Theorem of Cartan on the determination ofthe metric by mebns of the　curvature．
3．Hyperbolic space
4．Space forms
5．Isometries ofthe hyperbolic space；Theorem ofLiouville

CHAPTER 9一VARIATl0NS 0F ENERGY
1．Introduction．
2．Formulas for the first and second variations of enezgy
3．The theorems of Bonnet—Myers and of Synge-WeipJtein

CHAPTER 10-THE RAUCH COMPARISON THEOREM
1．Introduction
2．Ttle Theorem of Rauch．
3．Applications of the Index Lemma to immersions
4．Focal points and an extension of Rauch’s Theorem

CHAPTER 11—THE MORSE lNDEX THEOREM
1．Introduction
2.The Index Theorem

CHAPTER 12-THE FUNDAMENTAL GROUP OF MANIFOLDS 0F NEGATIVE CURVATURE
1．Introduction
2．Existence of closed geodesics
CHAPTER 13-THE SPHERE THEOREM
References
Index

前言/序言

黎曼几何 [Riemannian Geometry] 下载 mobi epub pdf txt 电子书 格式

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1872年克莱因在德国埃尔朗根大学作就职演讲时，阐述了《埃尔朗根纲领》，用变换群对已有的几何学进行了分类。在《埃尔朗根纲领》发表后的半个世纪内，它成了几何学的指导原理，推动了几何学的发展，导致了射影微分几何、仿射微分几何、共形微分几何的建立。特别是射影微分几何起始于1878年阿尔方的学位论文，后来1906年起经以威尔辛斯基为代表的美国学派所发展，1916年起又经以富比尼为首的意大利学派所发展。

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信价比还可以，书的质量不错

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看过很有收获，好书推荐。

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卡莫的黎曼几何写的不错，内容比较详细简单，讲得很细腻，很清楚，入门比较好，思维方式的不同吧。外国的书很多都是写的比较人性化，就是想一个老师在给你讲解一样。较重引导个人的思考，内容讲得全面一点。当然要学好一个理论当然对这个理论的各种不同的见解、认识、解释、说明都要有所了解，综合各方面的思想，重要是自己思考的过程。这本书比较适合自学，实际上，自学是获得知识的很重要的方面。

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..

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随后，由于黎曼几何的发展和爱因斯坦广义相对论的建立，微分几何在黎曼几何学和广义相对论中的得到了广泛的应用，逐渐在数学中成为独具特色、应用广泛的独立学科。

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在这本书里我看见当年大批意气风发的文青、艺青散落在各地，青春和国家对他们而言都已成为一个空洞的字眼。再者，我读着他们写下的诗与文字，那股偏执而热浓郁的情感由于无处喷薄而变得更加炽烈，在地下奔走。这股炽烈最终指向了那个确定的靶子。

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好书，值得

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