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SUMMARY:Maral Mostafazadehfard (Federal University of Rio de Janeiro (UFRJ
 ))
DTSTART:20200715T183000Z
DTEND:20200715T200000Z
DTSTAMP:20260423T004135Z
UID:BRAG/15
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BRAG/15/">Di
 visor class group of Hankel determinantal rings</a>\nby Maral Mostafazadeh
 fard (Federal University of Rio de Janeiro (UFRJ)) as part of Brazilian al
 gebraic geometry seminar\n\n\nAbstract\nHankel determinantal rings arise a
 s homogeneous coordinate rings of higher order secant varieties of rationa
 l normal curves. In any characteristic we give an explicit description of 
 divisor class groups of these rings and as a consequence we show that they
  are $\\mathbb{Q}$-Gorenstein rings. It has been shown that each divisor c
 lass group element is the class of a maximal Cohen Macaulay module.\n\nBas
 ed on a joint work with Aldo Conca\, Anurag K. Singh and Matteo Varbaro.\n
LOCATION:https://researchseminars.org/talk/BRAG/15/
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