Multitoric surfaces and Euler obstruction of a function (Q2831250)
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scientific article; zbMATH DE number 6647109
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Multitoric surfaces and Euler obstruction of a function |
scientific article; zbMATH DE number 6647109 |
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Multitoric surfaces and Euler obstruction of a function (English)
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2 November 2016
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multitoric surfaces
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determinantal surfaces
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Euler obstruction of a function
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Brasselet number
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In this paper a formula is given for the Euler obstruction of a function, introduced by Brasselet, Massey, Parameswaran and Seade, for nondegenerate functions on multitoric surfaces. A reducible surface is multitoric, if each irreducible component is a toric surface with torus action induced by a torus action on the ambient space. As application the authors study functions on three classes of reducible determinantal varieties, which are multitoric.
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