The Grothendieck ring of varieties and piecewise isomorphisms
β 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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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
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