加权爆破的K理论
K-theory of Weighted Blowups
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中文总结 AI 辅助
该研究计算光滑层加权爆破的K理论,确定特定曲线层的K理论,用爆破数据表达切复形的拉姆达多项式,并将运算K理论从环面作用扩展到光滑仿射代数群作用。
中文摘要 AI 辅助
我们计算了沿着光滑中心满足分解性质的光滑层的加权爆破的K理论。作为应用,我们确定了具有2个标记点的稳定亏格1曲线的层的K理论。此外,我们根据爆破数据表达了爆破态射的切复形的拉姆达多项式。在此过程中,我们将运算K理论从环面作用扩展到光滑仿射代数群的作用。
英文摘要
We compute the K-theory of weighted blowups of smooth stacks satisfying the resolution property along smooth centers. As an application, we determine the K-theory of the stack of stable genus 1 curves with 2 marked points. Furthermore, we express the Lambda polynomial of the tangent complex of the blowup morphism in terms of the blowup data. Along the way, we generalize the Anderson-Payne construction of equivariant operational K-theory from torus actions to actions of smooth affine algebraic groups.