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arXiv 1301.5299math.COmath.GR
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关于左正则带与实锥线排列

On Left regular bands and real Conic-Line arrangements

Michael Friedman, David Garber

摘要:

实际平面中的曲线排列将其划分为面的集合。在线性排列的情况下,存在一个结合积,它赋予这个集合一个左正则带的结构。一个自然的问题是,其他安排是否也可以这样做。在本文中,我们试图回答这个问题的最简单的推广线安排,即圆锥线安排。研究了圆锥线排列的面偏序集所引起的不同代数结构,给出了乘积及其相关结构的两种不同的推广:交替左正则带和结合非周期半群.我们还研究了由这些安排引起的次左正则带的结构。最后,我们完成了一些圆锥线安排的腔室计数结果。

英文摘要:

An arrangement of curves in the real plane divides it into a collection of faces. In the case of line arrangements, there exists an associative product which gives this collection a structure of a left regular band. A natural question is whether the same is possible for other arrangements. In this paper, we try to answer this question for the simplest generalization of line arrangements, that is, conic--line arrangements. Investigating the different algebraic structures induced by the face poset of a conic--line arrangement, we present two different generalizations for the product and its associated structures: an alternative left regular band and an associative aperiodic semigroup. We also study the structure of sub left regular bands induced by these arrangements. We finish with some chamber counting results for conic--line arrangements.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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