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:
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发表时间:
2020
期刊:
影响因子:
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通讯作者:
Alexander Putz
中科院分区:
文献类型:
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作者:
M. Lanini;Alexander Putz
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.
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