1974
DOI: 10.1007/bf01351850
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Deformationen von Quotientensingularit�ten (nach zyklischen Gruppen)

Abstract: Zur Erinnerung an meinen Freund Ulrich von HundetshausenDiese Arbeit verdankt ihr Entstehen dem Wunsch, Beispiele zu konstruieren fiir das Zusammenblasen von Deformationen der Aufl/3sung einer rationalen Singularit~it zu Deformationen der Singularit~it selbst (vgl. [13]). Der Einfachheit halber haben wir uns dabei zun~ichst auf diejenigen rationaten Singularit~iten beschr~inkt, ftir die der zu dem exzeptionellen Kurvensystem einer minimalen AufliSsung gehiSrende duale Graph unverzweigt ist. Dies sind bekanntli… Show more

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Cited by 128 publications
(86 citation statements)
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“…By Donaldson's theorem on the intersection form of definite 4-manifolds [3], the intersection forms of X Y and X We now briefly recall Riemenschneider's point rule [12]. Let p > q > 0 be coprime integers, and suppose This concludes the proof.…”
Section: Proof Of Theorem 11: Second Halfmentioning
confidence: 94%
“…By Donaldson's theorem on the intersection form of definite 4-manifolds [3], the intersection forms of X Y and X We now briefly recall Riemenschneider's point rule [12]. Let p > q > 0 be coprime integers, and suppose This concludes the proof.…”
Section: Proof Of Theorem 11: Second Halfmentioning
confidence: 94%
“…. , a n 3 ,3 ) are related to one another by Riemenschneider's point rule [11]. A notion that will appear in the text and is related to complementary legs is that of the dual of a string of integers (a 1 , .…”
Section: Graphs and Seifert Spacesmentioning
confidence: 99%
“…(1) and (2) are known ( [30]), and (5) follows easily from (2). To show (3) and (4), we may assume that c ; = 1.…”
Section: S G Is a CL If And Only If G Is Conjugate To One Of The Gromentioning
confidence: 99%
“…Thus the assertions are evident (cf. [30]). [25,21]), Xf -Xf is a relative invariant of L, and hence both Xf + Xf and (X x Xj) q are relative invariants of L. Clearly L\9t{CX x Θ CX,; L) is cyclic, and we must have…”
Section: S G Is a CL If And Only If G Is Conjugate To One Of The Gromentioning
confidence: 99%