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Journal of the American Mathematical Society

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ISSN 1088-6834 (online) ISSN 0894-0347 (print)

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Gromov-Witten invariants on Grassmannians
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by Anders Skovsted Buch, Andrew Kresch and Harry Tamvakis
J. Amer. Math. Soc. 16 (2003), 901-915
DOI: https://doi.org/10.1090/S0894-0347-03-00429-6
Published electronically: May 1, 2003
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Abstract:

We prove that any three-point genus zero Gromov-Witten invariant on a type $A$ Grassmannian is equal to a classical intersection number on a two-step flag variety. We also give symplectic and orthogonal analogues of this result; in these cases the two-step flag variety is replaced by a sub-maximal isotropic Grassmannian. Our theorems are applied, in type $A$, to formulate a conjectural quantum Littlewood-Richardson rule, and in the other classical Lie types, to obtain new proofs of the main structure theorems for the quantum cohomology of Lagrangian and orthogonal Grassmannians.
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Bibliographic Information
  • Anders Skovsted Buch
  • Affiliation: Matematisk Institut, Aarhus Universitet, Ny Munkegade, 8000 Århus C, Denmark
  • MR Author ID: 607314
  • Email: abuch@imf.au.dk
  • Andrew Kresch
  • Affiliation: Department of Mathematics, University of Pennsylvania, 209 South 33rd Street, Philadelphia, Pennsylvania 19104-6395
  • MR Author ID: 644754
  • Email: kresch@math.upenn.edu
  • Harry Tamvakis
  • Affiliation: Department of Mathematics, Brandeis University - MS 050, P. O. Box 9110, Waltham, Massachusetts 02454-9110
  • Email: harryt@brandeis.edu
  • Received by editor(s): July 18, 2002
  • Published electronically: May 1, 2003
  • Additional Notes: The authors were supported in part by NSF Grant DMS-0070479 (Buch), an NSF Postdoctoral Research Fellowship (Kresch), and NSF Grant DMS-0296023 (Tamvakis).
  • © Copyright 2003 American Mathematical Society
  • Journal: J. Amer. Math. Soc. 16 (2003), 901-915
  • MSC (2000): Primary 14N35; Secondary 14M15, 14N15, 05E15
  • DOI: https://doi.org/10.1090/S0894-0347-03-00429-6
  • MathSciNet review: 1992829