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DTSTART:20120311T070000
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DTSTART;TZID=America/Toronto:20120719T130000
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URL:https://uwaterloo.ca/pure-mathematics/events/student-algebra-seminar-ga
 rbary-jul-19-2012
LOCATION:MC - Mathematics & Computer Building 200 University Avenue West 51
 36B Waterloo ON N2L 3G1 Canada
SUMMARY:Student Algebra seminar
CLASS:PUBLIC
DESCRIPTION:ROBERT GARBARY\, PURE MATHEMATICS\, UNIVERSITY OF WATERLOO\n\n\
 "COHERENCE AND O(1)\"\n\nOn an affine scheme Spec(R)\, a coherent sheaf is
  a sheaf that 'comes\nfrom a module' over R. In the case where S is a ($\\
 mathbb{Z}$-)graded\nring\, we may construct a graded S-module out of S by 
 'twisting' the\ngrading. This sheaf (over Proj(S)) is called O(1). I will 
 go over some\nnon-examples of coherence\, and go over the construction and
  basic\nproperties of O(1).
DTSTAMP:20260605T065943Z
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