

|
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基本情報 |
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氏名 |
坂内 真三 |
氏名(カナ) |
バンナイ シンゾウ |
氏名(英語) |
Bannai Shinzo |
所属 |
理学部 応用数学科 |
職名 |
教授 |
researchmap研究者コード |
B000000212 |
researchmap機関 |
岡山理科大学 |
Poncelet’s closure theorem and the embedded topology of conic-line arrangements
Shinzo Bannai , Ryosuke Masuya, Taketo Shirane , Hiro-o Tokunaga, and EmikoYorisaki
In the study of plane curves, one of the problems is to classify the embedded topology of plane curves in the complex projective plane that have a given fixed combinatorial type, where the combinatorial type of a plane curve is data equivalent to the embedded topology in its tubular neighborhood. A pair of plane curves with the same combinatorial type but distinct embedded topology is called a Zariski pair. In this paper, we consider Zariski pairs consisting of conic-line arrangements that arise from Poncelet’s closure theorem. We study unramified double covers of the union of two conics that are induced by a 2m-sided Poncelet transverse. As an application, we show the existence of families of Zariski pairs of degree 2m+6 for m ≥2 that consist of reducible curves having two conics and 2m+2 lines as irreducible components.
Canadian Mathematical Bulletin
Cambridge University Press
http://dx.doi.org/10.4153/S0008439524000481
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