Journal
ADVANCES IN MATHEMATICS
Volume 407, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.aim.2022.108397
Keywords
Quivervarieties; LoopGrassmannians; Nilpotentcones
Categories
Funding
- National Science Foundation [1904107]
- National Science Foundation Postdoctoral Research Fellowship
- HSE University Basic Research Program
- Russian Academic Excellence
- Dobrushin stipend
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [1904107] Funding Source: National Science Foundation
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In type A, we identify the equivalences of geometries in three settings: Nakajima's (framed) quiver varieties, conjugacy classes of matrices, and loop Grassmannians. These equivalences are expressed through explicit formulas. In particular, we embed the framed quiver varieties into Beilinson-Drinfeld Grassmannians, leading to a compactification of Nakajima varieties and a decomposition of affine Grassmannians into Nakajima varieties. As an application, we present a geometric interpretation of symmetric and skew (GL(m), GL(n)) dualities.
In type A we find equivalences of geometries arising in three settings: Nakajima's (framed) quiver varieties, conjugacy classes of matrices and loop Grassmannians. These are all given by explicit formulas. In particular, we embedd the framed quiver varieties into Beilinson-Drinfeld Grass-mannians. This provides a compactification of Nakajima varieties and a decomposition of affine Grassmannians into Nakajima varieties. As an application we provide a geometric version of symmetric and skew (GL(m), GL(n)) dualities.(c) 2022 Published by Elsevier Inc.
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