Painlevé方程与有理二重点有理曲面的变形
Painlevé equations and deformations of rational surfaces with rational double points
摘要:
本文证明了Painlevé方程的Bäcklund变换来自于Okamoto构造的有理曲面作为初始条件空间的双有理映射.有理曲面族的有理二重点的同时分解产生了触发器,触发器是Painlevé方程对称群的起源。同时指出Kodaira-Spencer有理曲面变形理论解释了Painlevé方程的几何意义。
英文摘要:
In this paper, we show that the Bäcklund transformations of Painlevé equations come from birational maps of rational surfaces constructed by Okamoto as the spaces of initial conditions. The simultaneous resolutions of rational double points of the families of rational surfaces give rise to flops which are origins of symmetry groups of Painlevé equation. Moreover we point out that Kodaira--Spencer theory of deformations of rational surfaces explains a geomrtric meaning of Painlevé equations.
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