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Titlebook: Applications of Algebraic Topology; Graphs and Networks. S. Lefschetz Book 1975 Springer Science+Business Media New York 1975 Algebraic.Alg

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發(fā)表于 2025-3-21 17:28:54 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
期刊全稱Applications of Algebraic Topology
期刊簡稱Graphs and Networks.
影響因子2023S. Lefschetz
視頻videohttp://file.papertrans.cn/160/159284/159284.mp4
學(xué)科分類Applied Mathematical Sciences
圖書封面Titlebook: Applications of Algebraic Topology; Graphs and Networks. S. Lefschetz Book 1975 Springer Science+Business Media New York 1975 Algebraic.Alg
影響因子This monograph is based, in part, upon lectures given in the Princeton School of Engineering and Applied Science. It presupposes mainly an elementary knowledge of linear algebra and of topology. In topology the limit is dimension two mainly in the latter chapters and questions of topological invariance are carefully avoided. From the technical viewpoint graphs is our only requirement. However, later, questions notably related to Kuratowski‘s classical theorem have demanded an easily provided treatment of 2-complexes and surfaces. January 1972 Solomon Lefschetz 4 INTRODUCTION The study of electrical networks rests upon preliminary theory of graphs. In the literature this theory has always been dealt with by special ad hoc methods. My purpose here is to show that actually this theory is nothing else than the first chapter of classical algebraic topology and may be very advantageously treated as such by the well known methods of that science. Part I of this volume covers the following ground: The first two chapters present, mainly in outline, the needed basic elements of linear algebra. In this part duality is dealt with somewhat more extensively. In Chapter III the merest elements of
Pindex Book 1975
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Reliability, Life Testing, and Shelf Life,Two elements dominate linear algebra: matrices and vectors. One may identify vectors with certain matrices but not .. Thus matrices are the dominant feature. We shall, therefore, first deal with matrices and then with vectors.
地板
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Simulation and Random Variable Generation,The idea of duality occurs in many parts of mathematics. Its earliest appearance (some 125 years ago) was in projective geometry where it permitted to halve the number of theorems to be proved. It also played a most important role in analysis, for example in Banach spaces. In topology, beginning with Poincaré its role has been no less important.
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https://doi.org/10.1007/978-3-642-45641-1There are many approaches to topology. One of the most accessible is by means of the notion of distance. Our purpose in the present chapter is to sketch this approach and a few of the general concepts derivable from it. It may be said that this material amply covers our future needs.
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https://doi.org/10.1007/978-3-642-45641-1The properties of a finite graph (only type considered) may be divided into two distinct groups: geometric, really topological properties, and algebraic properties. In the present chapter, we present the geometry of a graph and in the next its algebra.
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發(fā)表于 2025-3-22 18:45:02 | 只看該作者
Empirical Modeling of Exchange Rate Dynamics. The first step in dealing with graph algebra is to orient the graph G. This means assigning to each branch b. with endpoints n.,n. one of the two, say, n. as . point and the other n. as . point. Hereafter G will always be assumed oriented.
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https://doi.org/10.1007/978-3-642-22901-5A graph G is planar if one may sketch it on an Euclidean plane, that is represent it faithfully (map it topologically) on the plane: The problem of finding conditions under which G is planar is of evident geometric interest, and also of interest for network theory as we shall see. This is the main problem to be discussed in the present chapter.
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