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Talks by Alexander Postnikov

Not very updated list.

Talks are listed in the inverse chronological order.

  1. Generalized Permutohedra
    Workshop on Geometric and Topological Combinatorics, Mathematisches Forschungsinstitut Oberwolfach, Germany, January 2007.

  2. Combinatorics of Grassmann cells
    Special Session on Algebraic & Analytic Combinatorics, AMS Meeting in Storrs, Connecticut, October 28, 2006.
    [Abstract]

  3. Total positivity on the Grassmannian
    Special Session on Combinatorial Methods in Equivariant Topology, AMS Meeting in Storrs, Connecticut, October 28, 2006.
    [Abstract]

  4. Arithmetics of the Catalan numbers
    talk for Summer Program for Undergraduate Research (SPUR), MIT, July 27, 2006.

  5. Towards general Schur positivity and higher saturation
    Combinatorics Seminar, University of California in San Diego, May 9, 2006.
    [Abstract]

  6. Special Session on Enumerative Aspects of Polytopes, AMS meeting in San Francisco State University, April 2006.

  7. Combinatorics of permutohedra and associahedra
    Special Session on Algebraic and Geometric Combinatorics, AMS meeting in Bard College, October 8, 2005.

  8. A combinatorial model for representations of Kac-Moody algebras
    Infinite-Dimensional Algebra Seminar, MIT, May 06, 2005.
    [Abstract]

  9. A combinatorial model for irreducible representations.
    Seminar "Geometric Methods in Representation Theory", University of North Carolina, Chapel Hill, April 15, 2005.
    [Abstract]

  10. Total positivity on the Grassmannian.
    Algebraic Geometry Seminar, Brown University, November 22, 2004.
    [Abstract]

  11. Simple combinatorial model for crystals for Kac-Moody algebras.
    Discrete Mathematics & Representation Theory Seminar, University of California at Davis, November 5, 2004.
    [Abstract]

  12. Hyperplane arrangements and ideals generated by powers of linear forms.
    MSRI workshop Combinatorial Aspects of Hyperplane Arrangements, Berkeley, California, November 4, 2004.

  13. Permutohedra, assiciahedra, and beyond.
    Combinatorics Seminar, University of California, Berkeley, November 1, 2004.
    [Abstract]

  14. Degrees of Schubert varieties.
    Special Session on Modern Schubert Calculus, AMS Fall Central Meeting, Evanston, IL, October 24, 2004.
    [Abstract]

  15. Volumes of polytopes.
    talk for Summer Program for Undergraduate Research (SPUR), MIT, July 21, 2004.

  16. Affine Weyl groups in K-theory and representation theory.
    16-th International Conference FPSAC, University of British Columbia, Vancouver B.C., Canada, July 02, 2004.
    Extended Abstract:   [PDF]   (12 pages)

  17. Permutohedra, associahedra, and beyond.
    Stanley Conference, June 26, 2004, MIT.
    Transparencies:   [PS]    [PDF]  (21 slides)

  18. Affine Weyl groups in K-theory, representation theory, and combinatorics.
    SIAM conference on Discrete Mathematics, June 14, 2004, Nashville, TN.
    Transparencies:   [PS]    [PDF]   (13 slides)

  19. Combinatorics of alcoves with applications to representation theory and K-theory.
    MIT Combinatorics Seminar, October 8, 2003.
    [Abstract]

  20. Affine Weyl groups in K-theory and representation theory.
    Geometry-Algebra-Singularities-Combinatorics Seminar, Northeastern University, October 06, 2003.
    [Abstract]

  21. Affine Weyl groups in K-theory and representation theory.
    MIT Lie Groups Seminar, September 17, 2003.
    [Abstract]

  22. Gromov-Witten invariants and toric tableaux.
    Mathematics Colloquium, Purdue University, West Lafayette, IN, April, 2003.
    [Abstract]

  23. Trees, parking functions, syzygies, and deformations of monomial ideals.
    Geometry-Algebra-Singularities-Combinatorics Seminar, Northeastern University, April 21, 2003.
    [Abstract]

  24. Gromov-Witten invariants and toric shapes.
    Fellowship of the Ring, Brandeis University, March 24, 2003.
    [Abstract]

  25. Trees, parking functions, syzygies, and deformations of monomial ideals.
    MIT Combinatorics Seminar, February 14, 2003.
    [Abstract]

  26. Quantum Bruhat graph and Schubert polynomials.
    Special Session on Ring Structures in the Schubert Calculus, AMS meeting, Boston, MA, October 6, 2002.
    [Abstract]

  27. Affine approach to quantum Schubert calculus.
    Special Session on Algebraic Geometry and Combinatorics, AMS meeting at Portland, Oregon, June 21, 2002.

  28. Quantum cohomology of Grassmannians and affine algebras.
    Geometry Seminar, Boston University, April 3, 2002.
    [Abstract]

  29. XYX algebras.
    Special Session on Algebraic Combinatorics, AMS meeting at Atlanta, Georgia, March 8, 2002.
    [Abstract]

  30. Grassmann cells and planar networks.
    Combinatorics Seminar, University of Michigan, Ann Arbor, January 25, 2002.
    [Abstract]

  31. Grassmann cells and planar networks.
    MIT Combinatorics Seminar joint with Lie Groups Seminar, November 28, 2001.
    [Abstract]

  32. Webs in Grassmann cells.
    Special Session on Algebraic and Topological Combinatorics, AMS meeting at Williamstown, Massachusetts, October 14, 2001.
    [Abstract]    [Transparencies]  (13 slides)

  33. Totally positive view of a computer microchip.
    UC Berkeley Combinatorics Seminar, May 7, 2001.
    [Abstract]

  34. Totally positive view of a computer microchip.
    MIT Combinatorics Seminar, April 11, 2001.
    [Abstract]

  35. Littelwood-Richardson coefficients via Yang-Baxter equation.
    Geometry/Topology Seminar, University of California at Davis, February 27, 2001.

  36. Mathematics Colloquium, Cornell University, January 2001.

  37. Combinatorics Seminar, University of Minnesota, November 10, 2000.

  38. Special Session on Algebraic and Geometric Combinatorics, AMS meeting at San Francisco, California, October 2000.

  39. Schubert calculus and quantum cohomology.
    Mathematics Colloquium, University of Arizona, Tucson, October 26, 2000.
    [Abstract]

  40. Syzygies of hyperplane arrangements and matroids.
    MIT Combinatorics Seminar, May 3, 2000.
    [Abstract]

  41. Algebras of curvatrure forms on flag manifolds, forests, monomial ideals, and parking functions.
    UC Berkeley Combinatorics Seminar, February 14, 2000.
    [Abstract]

  42. The Littlewood-Richardson coefficients, the Yang-Baxter equation, and canonical bases.
    UC Berkeley Combinatorics Seminar, August 30, 1999.

  43. Littlewood-Richardson coeffients via Yang-Baxter equations.
    MIT Combinatorics Seminar, October 7, 1998.
    [Abstract]

  44. Chern forms on flag manifolds and forests.
    10-th International Conference FPSAC, Fields Institute, Toronto, 1998.
    Extended Abstract:  [PS]    [PDF]   (5 pages)

  45. Littlewood-Richardson coefficients via Yang-Baxter equation and canonical bases.
    International Conference of Combinatorial Methods in Representation Theory, RIMS, Kyoto, Japan, July 1998, (RIMS Project '98).

  46. Topology and Geometry Seminar, University of Wisconsin, Madison, April 1998.

  47. Combinatorics and Representation Theory Seminar, Princeton University, February 1998.

  48. Algebras of Chern forms on flag manifolds and forests.
    MIT Combinatorics Seminar, February 11, 1998.
    [Abstract]

  49. Gromov-Witten invariants of flag manifolds.
    Mathematics Colloquium, Bar-Ilan University, Israel, January 25, 1998.

  50. Combinatorics Seminar, Bar-Ilan University, Israel, January 1998.

  51. Hidden Symmetries of Gromov-Witten Invariants.
    MIT Combinatorics Seminar, September 26, 1997.
    [Abstract]

  52. Gromov Witten invariants of flag manifolds.
    New York Journal of Mathematics Conference, University at Albany, New York, June 10, 1997.

  53. Workshop on Representation Theory and Symmetric Functions, MSRI, Berkeley, California, April 1997.

  54. Seminar on Discrete Mathematics, University of California, Berkeley, April 1997.

  55. Gromov-Witten Invariants and Schubert Polynomials.
    Special Session on Lie Groups and Physics, AMS meeting at Columbia, Missouri, November 1996.
    Transparencies:   [PS]    [PDF]  (20 slides)

  56. Deformations of Coxeter Arrangements.
    Combinatorics Seminar, Northeastern University, October 2, 1996.

  57. Oscillating tableaux, S_n x S_m-modules, and Robinson-Schensted-Knuth correspondence.
    8-th International Conference FPSAC, University of Minnesota, 1996.
    Preprint:   [PS]    [PDF]   (22 pages)

  58. Combinatorics Seminar, M.I.T., February 1996.

  59. Hypergeometric functions associated with positive roots.
    Gelfand Seminar, Rutgers University, November 1994.

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Last updated:   August 30, 2024