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Bulletin of the American Mathematical Society

The Bulletin publishes expository articles on contemporary mathematical research, written in a way that gives insight to mathematicians who may not be experts in the particular topic. The Bulletin also publishes reviews of selected books in mathematics and short articles in the Mathematical Perspectives section, both by invitation only.

ISSN 1088-9485 (online) ISSN 0273-0979 (print)

The 2020 MCQ for Bulletin of the American Mathematical Society is 0.84.

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Noncommutative curves and noncommutative surfaces
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by J. T. Stafford and M. Van den Bergh PDF
Bull. Amer. Math. Soc. 38 (2001), 171-216 Request permission

Abstract:

In this survey article we describe some geometric results in the theory of noncommutative rings and, more generally, in the theory of abelian categories. Roughly speaking and by analogy with the commutative situation, the category of graded modules modulo torsion over a noncommutative graded ring of quadratic, respectively cubic, growth should be thought of as the noncommutative analogue of a projective curve, respectively surface. This intuition has led to a remarkable number of nontrivial insights and results in noncommutative algebra. Indeed, the problem of classifying noncommutative curves (and noncommutative graded rings of quadratic growth) can be regarded as settled. Despite the fact that no classification of noncommutative surfaces is in sight, a rich body of nontrivial examples and techniques, including blowing up and down, has been developed.
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Additional Information
  • J. T. Stafford
  • Affiliation: Department of Mathematics, University of Michigan, Ann Arbor, MI 48109
  • Email: jts@math.lsa.umich.edu
  • M. Van den Bergh
  • Affiliation: Departement WNI, Limburgs Universitair Centrum, 3590 Diepenbeek, Belgium
  • MR Author ID: 176980
  • Email: vdbergh@luc.ac.be
  • Received by editor(s): October 18, 1999
  • Received by editor(s) in revised form: May 20, 2000
  • Published electronically: January 9, 2001
  • Additional Notes: The first author was supported in part by an NSF grant
    The second author is a senior researcher at the FWO and was partially supported by the Clay Research Institute during the preparation of this article.
  • © Copyright 2001 American Mathematical Society
  • Journal: Bull. Amer. Math. Soc. 38 (2001), 171-216
  • MSC (2000): Primary 14A22, 14F05, 16D90, 16P40, 16S80, 16W50, 18E15
  • DOI: https://doi.org/10.1090/S0273-0979-01-00894-1
  • MathSciNet review: 1816070