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Titlebook: Elementary Topics in Differential Geometry; J. A. Thorpe Textbook 1979 Springer-Verlag New York Inc. 1979 Differentialgeometrie.Isometrie.

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发表于 2025-3-21 16:52:11 | 显示全部楼层 |阅读模式
书目名称Elementary Topics in Differential Geometry
编辑J. A. Thorpe
视频video
丛书名称Undergraduate Texts in Mathematics
图书封面Titlebook: Elementary Topics in Differential Geometry;  J. A. Thorpe Textbook 1979 Springer-Verlag New York Inc. 1979 Differentialgeometrie.Isometrie.
描述In the past decade there has been a significant change in the freshman/ sophomore mathematics curriculum as taught at many, if not most, of our colleges. This has been brought about by the introduction of linear algebra into the curriculum at the sophomore level. The advantages of using linear algebra both in the teaching of differential equations and in the teaching of multivariate calculus are by now widely recognized. Several textbooks adopting this point of view are now available and have been widely adopted. Students completing the sophomore year now have a fair preliminary under­ standing of spaces of many dimensions. It should be apparent that courses on the junior level should draw upon and reinforce the concepts and skills learned during the previous year. Unfortunately, in differential geometry at least, this is usually not the case. Textbooks directed to students at this level generally restrict attention to 2-dimensional surfaces in 3-space rather than to surfaces of arbitrary dimension. Although most of the recent books do use linear algebra, it is only the algebra of ~3. The student‘s preliminary understanding of higher dimensions is not cultivated.
出版日期Textbook 1979
关键词Differentialgeometrie; Isometrie; Minimal surface; curvature; differential geometry
版次1
doihttps://doi.org/10.1007/978-1-4612-6153-7
isbn_softcover978-1-4612-6155-1
isbn_ebook978-1-4612-6153-7Series ISSN 0172-6056 Series E-ISSN 2197-5604
issn_series 0172-6056
copyrightSpringer-Verlag New York Inc. 1979
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The Gauss Map,on .:. → ℝ.. associated with the vector field . by .(.) = (., .(.)), . ∈ ., actually maps . into the unit .-sphere S. ⊂ ℝ.. since ∥.(.)∥ = 1 for all . ∈ .. Thus, associated to each oriented .-surface . is a smooth map .: . → S.. called the .. . may be thought of as the map which assigns to each poin
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Geodesics, proccss of differentiation of vector fields and functions defined along parametrized curves. In order to allow the possibility that such vector fields and functions may take on different values at a point where a parametrized curve crosses itself, it is convenient to regard these fields and functio
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Parallel Transport,however, generally not tangent to .. We can, nevertheless, obtain a vector field tangent to . by projecting Ẋ(.) orthogonally onto .. for each . ∈ . (see Figure 8.1). This process of differentiating and then projecting onto the tangent space to . defines an operation with the same properties as diff
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Convex Surfaces,ee Figure 13.1). An oriented .-surface . is . at . ∈ . if there exists an open set . ⊂ ℝ.. containing . such that . ∩ . is contained either in . or in .. Thus a convex .-surface is necessarily convex at each of its points, but an .-surface convex at each point need not be a convex .-surface (see Fig
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Parametrized Surfaces,ure . and (ii) define various integrals over .. We shall now carry out a similar program for .-surfaces (. > 1). It will turn out that oriented .-surfaces (even connected ones) in general admit only local parametrizations, but that will be adequate for our needs.
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The Exponential Map, We begin by using a technique of the calculus of variations analogous to the one we used in Chapter 18 to study minimal surfaces. Now, however, we shall vary parametrized curves rather than parametrized surfaces
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