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The Connectedness of Hessenberg Varieties

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 نشر من قبل Martha Precup
 تاريخ النشر 2013
  مجال البحث
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 تأليف Martha Precup




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In this paper we consider certain closed subvarieties of the flag variety, known as Hessenberg varieties. We give a connectedness criterion for semisimple Hessenberg varieties generalizing a criterion given by Anderson and Tymoczko. We show that nilpotent Hessenberg varieties are rationally connected.



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