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Superisolated Surface Singularities

機(jī)譯:超隔離表面奇點(diǎn)

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摘要

In this survey, we review part of the theory of superisolated surface singularities (SIS) and its applications including some new and recent developments. The class of SIS singularities is, in some sense, the simplest class of germs of normal surface singularities. Namely, their tangent cones are reduced curves and the geometry and topology of the SIS singularities can be deduced from them. Thus this class contains, in a canonical way, all the complex projective plane curve theory, which gives a series of nice examples and counterexamples. They were introduced by I. Luengo to show the non-smoothness of the μ-constant stratum and have been used to answer negatively some other interesting open questions. We review them and the new results on normal surface singularities whose link are rational homology spheres. We also discuss some positive results which have been proved for SIS singularities
機(jī)譯:在本次調(diào)查中,我們回顧了超隔離表面奇點(diǎn)理論(SIS)的一部分及其應(yīng)用,包括一些新近的發(fā)展。在某種意義上,SIS奇異性的類(lèi)別是正常表面奇異性的最簡(jiǎn)單細(xì)菌類(lèi)別。即,它們的切線圓錐是減小的曲線,并且可以從它們推斷出SIS奇異性的幾何形狀和拓?fù)洹R虼?,該?lèi)以規(guī)范的方式包含所有復(fù)雜的投影平面曲線理論,該理論給出了一系列不錯(cuò)的示例和反示例。它們是由I. Luengo引入的,旨在顯示μ恒定層的不光滑度,并已被否定地回答了其他一些有趣的開(kāi)放性問(wèn)題。我們回顧了它們以及關(guān)于正常表面奇異性的新結(jié)果,這些奇異表面的鏈接是有理同源性球體。我們還將討論一些已被證明為SIS奇異性的積極結(jié)果

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