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 M3//EN
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CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20200205T185553Z
DTSTART:20200512T140000Z
SUMMARY:Cathy Hsu (Heilbronn)  - Eisenstein congruences and an explicit n
 on-Gorenstein R=T
UID:{http://www.columbasystems.com/customers/uom/gpp/eventid/}pio-k0gm9wk
 0-t9y83q
DESCRIPTION:Abstract: In his seminal work on modular curves and the Eisen
 stein ideal\, Mazur studied the existence of congruences between certain
  Eisenstein series and newforms\, proving that Eisenstein ideals associa
 ted to weight 2 cusp forms of prime level are locally principal. In this
  talk\, we begin by discussing several generalizations of Mazur's\nresul
 ts to squarefree levels\, focusing primarily on the non-principality of 
 the Eisenstein ideal in the anemic Hecke algebra associated to elliptic 
 modular forms of weight 2 and trivial Nebentypus. We then discuss some w
 ork in progress\, joint with Preston Wake and Carl Wang-Erickson\, that 
 establishes an algebraic criterion for having R=T in a certain non-Goren
 stein setting.
STATUS:TENTATIVE
TRANSP:TRANSPARENT
CLASS:PUBLIC
LOCATION:Frank Adams 1\, Alan Turing Building\, Manchester
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