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The characteristic cycles and semi-canonical bases on type $A$ quiver variety

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 نشر من قبل Taiwang Deng
 تاريخ النشر 2020
  مجال البحث
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In this article we study a conjecture of Geiss-Leclerc-Schr{o}er, which is an analogue of a classical conjecture of Lusztig in the Weyl group case. It concerns the relation between canonical basis and semi-canonical basis through the characteristic cycles. We formulate an approach to this conjecture and prove it for type $A_2$ quiver. In general type A case, we reduce the conjecture to show that certain nearby cycles have vanishing Euler characteristic.



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