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Superisolated Surface Singularities

機(jī)譯:超分離表面奇異性

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摘要

In this survey, we review part of the theory of superisolated surfacesingularities (SIS) and its applications including some new and recentdevelopments. The class of SIS singularities is, in some sense, the simplestclass of germs of normal surface singularities. Namely, their tangent cones arereduced curves and the geometry and topology of the SIS singularities can bededuced from them. Thus this class \emph{contains}, in a canonical way, all thecomplex projective plane curve theory, which gives a series of nice examplesand counterexamples. They were introduced by I. Luengo to show thenon-smoothness of the $\mu$-constant stratum and have been used to answernegatively some other interesting open questions. We review them and the newresults on normal surface singularities whose link are rational homologyspheres. We also discuss some positive results which have been proved for SISsingularities.
機(jī)譯:在本次調(diào)查中,我們回顧了超隔離表面奇異性(SIS)理論的一部分及其應(yīng)用,包括一些新近的發(fā)展。在某種意義上,SIS奇異性的類別是正常表面奇異性的最簡(jiǎn)單細(xì)菌類別。即,它們的切錐是減少的曲線,并且可以從它們推斷出SIS奇異性的幾何形狀和拓?fù)?。因此,該類\ emph {以規(guī)范的方式包含所有復(fù)雜的射影平面曲線理論,該理論給出了一系列很好的例子和反例。它們是由I. Luengo引入的,以顯示恒定的\\ mu $層的非光滑性,并已被用來(lái)否定地回答其他一些有趣的開(kāi)放性問(wèn)題。我們回顧了它們以及正態(tài)表面奇異性的新結(jié)果,這些奇異表面的鏈接是有理同性球。我們還討論了一些已被證明具有SIS奇異性的積極結(jié)果。

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