GKM-theory for torus actions on cyclic quiver Grassmannians

GKM-theory for torus actions on cyclic quiver Grassmannians
复制标题

循环箭袋格拉斯曼运动的环面作用的 GKM 理论

DOI:
--
复制
发表时间:
2020
期刊:
Algebra & Number Theory
影响因子:
--
通讯作者:
Alexander Putz
Alexander Putz
中科院分区:
--
文献类型:
--
作者:
M. Lanini;Alexander Putz

文献摘要

参考文献

被引文献

相似文献

我们定义并研究了颤动格拉斯曼函数上的代数环面作用,以获得等向环的幂零表示。此类变体的示例包括 $t A$ 标志变体类型、它们的线性简并、$GL_n$-仿射标志变体和仿射格拉斯曼变体的有限维近似。我们证明,这些配备了我们的环面动作的箭袋格拉斯曼人是 GKM 变体,并且它们的矩图允许根据基础箭袋表示的系数箭袋进行组合描述。通过适应冈萨雷斯的设置结果,我们能够证明矩图技术可以应用于构造上述箭袋格拉斯曼函数的等变上同调的模基。
We define and investigate algebraic torus actions on quiver Grassmannians for nilpotent representations of the equioriented cycle. Examples of such varieties are type $ t A$ flag varieties, their linear degenerations, finite dimensional approximations of the $GL_n$-affine flag variety and affine Grassmannian. We show that these quiver Grassmannians, equipped with our torus action, are GKM-varieties and that their moment graph admits a combinatorial description in terms of coefficients quiver of the underlying quiver representations. By adapting to our setting results by Gonzales, we are able to prove that moment graph techniques can be applied to construct module bases for the equivariant cohomology of the above quiver Grassmannians.
DOI: 10.1007/s00209-016-1839-y
发表时间: 2017
影响因子: 0.8
作者:
G. Cerulli Irelli;X. Fang;E. Feigin;G. Fourier;M. Reineke
通讯作者: M. Reineke