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DTSTART:20180311T070000
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DTSTART;TZID=America/Toronto:20180403T150000
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URL:https://uwaterloo.ca/pure-mathematics/events/algebraic-geometry-learnin
 g-seminar-36
SUMMARY:Algebraic Geometry Learning Seminar
CLASS:PUBLIC
DESCRIPTION:FARIDA SHAHATA\, DEPARTMENT OF PURE MATHEMATICS\, UNIVERSITY OF
  WATERLOO\n\n\"More projective geometry\"\n\nProjective schemes make a com
 eback! Following our previous discussion\non closed immersions and closed 
 subschemes\, the next natural step is\nto study closed embeddings of proje
 ctive schemes. \n\nAs for affine schemes\, we will see that a surjection 
 of graded rings\ninduces a closed embedding of projective schemes. Convers
 ely\, every\nclosed subscheme of a projective scheme arises from a graded 
 ideal\,\nhence\, is projective itself. 
DTSTAMP:20260607T065849Z
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