Heaps, crystals, and preprojective algebra modules
Heaps, crystals, and preprojective algebra modules
复制标题
堆、晶体和预投影代数模块
DOI:
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发表时间:
2022
期刊:
影响因子:
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通讯作者:
Calder Morton
中科院分区:
文献类型:
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作者:
Anne Dranowski;Bal'azs Elek;J. Kamnitzer;Calder Morton
Fix a simply-laced semisimple Lie algebra. We study the crystal $ B(n\lambda)$, were $\lambda$ is a dominant minuscule weight and $n$ is a natural number. On one hand, $B(n\lambda)$ can be realized combinatorially by height $n$ reverse plane partitions on a heap associated to $\lambda$. On the other hand, we use this heap to define a module over the preprojective algebra of the underlying Dynkin quiver. Using the work of Saito and Savage-Tingley, we realize $B(n\lambda)$ via irreducible components of the quiver Grassmannian of $n$ copies of this module. In this paper, we describe an explicit bijection between these two models for $B(n\lambda)$ and prove that our bijection yields an isomorphism of crystals. Our main geometric tool is Nakajima's tensor product quiver varieties.
影响因子:
3.1
作者:
Nakajima, H
通讯作者:
Nakajima, H