社会网络研究导论2社会网络分析发展简史Development of social network analysis杜海峰
社会网络研究导论2 社会网络分析发展简史 Development of social network analysis 杜海峰
网络研究发展·从哥尼斯堡七桥问题开始(Seven bridgeproblem)SWEDENFINLAND瑞典芬酬NORWAY挪威HelainkiSt.PetersburgOsloStockholmTallinnRUSSIAESTONIA俄通斯爱沙尼RigaLATVIA拉机推DENMARK丹森LITHUANIA立陶究CopenhagenDKaliningradVilniugMinsk波酬BELORUSSIA加里换POLAND白战播斯BaiceranY格物州WarsawBerlin德园
网络研究发展 • 从哥尼斯堡七桥问题开始(Seven bridge problem)
网络研究发展·从哥尼斯堡七桥问题开始(Seven bridgeproblem)KONINGSEKGA/5MapofKonigsberginEuler'stimeshowingtheactuallayoutofthesevenbridges,highlightingtheriverPregelandthebridges
网络研究发展 • 从哥尼斯堡七桥问题开始(Seven bridge problem) Map of Königsberg in Euler's time showing the actual layout of the seven bridges, highlighting the river Pregel and the bridges
网络研究发展The Seven Bridges of Konigsberg is a historically notableproblem in mathematics. Its negative resolution byLeonhard Euler in 1736 laid the foundations of graphtheory and prefigured the idea of topology. The city of Konigsberg in Prussia (now Kaliningrad,Russia) was set on both sides of the Pregel River, andincluded two large islands - Kneiphof and Lomse -which were connected to each other, or to the twomainland portions of the city, by seven bridges. Theproblem wasto devise a walk through the city thatwould cross eachof thosebridges onceandonlyonce
网络研究发展 • The Seven Bridges of Königsberg is a historically notable problem in mathematics. Its negative resolution by Leonhard Euler in 1736 laid the foundations of graph theory and prefigured the idea of topology. • The city of Königsberg in Prussia (now Kaliningrad, Russia) was set on both sides of the Pregel River, and included two large islands - Kneiphof and Lomse - which were connected to each other, or to the two mainland portions of the city, by seven bridges. The problem was to devise a walk through the city that would cross each of those bridges once and only once
网络研究发展·从哥尼斯堡七桥问题开始(Seven bridgeproblem)
网络研究发展 • 从哥尼斯堡七桥问题开始(Seven bridge problem)