GENERALIZED EULER CHARACTERISTICS, GRAPH HYPERSURFACES, AND FEYNMAN PERIODS

GENERALIZED EULER CHARACTERISTICS, GRAPH HYPERSURFACES, AND FEYNMAN PERIODS
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广义欧拉特征、图超曲面和费曼周期

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发表时间:
2014
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通讯作者:
P. Aluffi
P. Aluffi
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作者:
P. Aluffi

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。我们给出了一个非常非正式的背景介绍,关于Grothendieck群的变种和特征类,两者都被视为普通拓扑欧拉特征的推广。然后,我们回顾了最近使用这些工具研究“图超曲面”的一些工作-一个由费曼振幅作为这些超曲面补的周期的代数几何解释所激发的主题。这些笔记在内容和风格上都与我2011年7月5日至8日在Villa de Leyva的暑期学校所做的讲座密切相关。
. We give a very informal presentation of background on the Grothendieck group of varieties and on characteristic classes, both viewed as generalizations of the ordinary topological Euler characteristic. We then review some recent work using these tools to study ‘graph hypersurfaces’—a topic motivated by the algebro-geometric interpretation of Feynman amplitudes as periods of complements of these hypersurfaces. These notes follow closely, both in content and style, my lectures at the Summer school in Villa de Leyva, July 5-8, 2011.