Constructible Functions on the Steinberg Variety
نویسندگان
چکیده
منابع مشابه
Algebraically Constructible Functions
An algebraic version of Kashiwara and Schapira's calculus of constructible functions is used to describe local topological properties of real algebraic sets, including Akbulut and King's numerical conditions for a stratiied set of dimension three to be algebraic. These properties, which include generalizations of the invariants modulo 4, 8, and 16 of Coste and Kurdyka, are deened using the link...
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Let W be a real algebraic set. We show that the following families of integervalued functions on W coincide: (i) the functions of the form w → χ(Xw), where Xw are the fibres of a regular morphism f : X → W of real algebraic sets, (ii) the functions of the form w → χ(Xw), where Xw are the fibres of a proper regular morphism f : X →W of real algebraic sets, (iii) the finite sums of signs of polyn...
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ژورنال
عنوان ژورنال: Advances in Mathematics
سال: 1997
ISSN: 0001-8708
DOI: 10.1006/aima.1997.1668