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The Grothendieck ring of varieties and piecewise isomorphisms

✍ Scribed by Qing Liu; Julien Sebag


Book ID
105875455
Publisher
Springer-Verlag
Year
2009
Tongue
French
Weight
337 KB
Volume
265
Category
Article
ISSN
0025-5874

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Picard Groups, Grothendieck Rings, and B
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for spurring me to write these observations, and I thank Halvard Fausk and Gaunce Lewis for careful readings of several drafts and many helpful comments. I thank Madhav Nori and Hyman Bass for help with the ring theory examples and Peter Freyd, Michael Boardman, and Neil Strickland for facts about c

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We prove a conjecture of A.S. Buch concerning the structure constants of the Grothendieck ring of a flag variety with respect to its basis of Schubert structure sheaves. For this, we show that the coefficients in this basis of the structure sheaf of any subvariety with rational singularities have al