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This article is cited in 1 scientific paper (total in 1 paper)
A'Campo–Gusein-Zade diagrams as partially ordered sets
G. G. Ilyuta Independent University of Moscow
Abstract:
The real analogues of many results about complex monodromies of singularities can be formulated and proved in terms of partial orderings on A'Campo–Gusein-Zade diagrams,
the real versions of Coxeter–Dynkin diagrams of singularities. In this paper it is proved that the only diagrams among the A'Campo–Gusein-Zade diagrams of singularities that determine
partially ordered sets of finite type (in the sense of representations of a quiver) are the diagrams of simple singularities. To encode the real decompositions of a singularity the analogue of Vasilev invariants turn out to be surjections of a partially ordered set onto a chain. Formulae are proved for Arnold $(\operatorname{mod}2)$-invariants of plane curves in terms of the corresponding A'Campo–Gusein-Zade diagrams. We define, in the context of higher Bruhat orders, higher partially ordered sets and we describe their connection with the higher $M$-Morsifications $A_n$. We also consider certain previously known results about real singularities from the point of view of partially ordered sets.
Received: 21.03.2000
Citation:
G. G. Ilyuta, “A'Campo–Gusein-Zade diagrams as partially ordered sets”, Izv. Math., 65:4 (2001), 687–704
Linking options:
https://www.mathnet.ru/eng/im347https://doi.org/10.1070/IM2001v065n04ABEH000347 https://www.mathnet.ru/eng/im/v65/i4/p49
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Abstract page: | 762 | Russian version PDF: | 307 | English version PDF: | 60 | References: | 103 | First page: | 3 |
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