AMS Sectional Meeting Program by Special Session

Current as of Sunday, May 3, 2009 00:21:11

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Program  |  Deadlines  |  Registration/Housing/Etc.  |  Inquiries:  meet@ams.org

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2009 Spring Eastern Section Meeting
Worcester, MA, April 25-26, 2009 (Saturday - Sunday)
Meeting #1050

Associate secretaries:
Steven H Weintraub, AMS steve.weintraub@lehigh.edu

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Special Session on Algebraic Graph Theory, Association Schemes, and Related Topics

• Saturday April 25, 2009, 8:00 a.m.-10:50 a.m.
  Special Session on Algebraic Graph Theory, Association Schemes, and Related Topics, I
  Room 218, Higgins Laboratories
  Organizers:
  William J. Martin, Worcester Polytechnic Institute martin@wpi.edu
  Sylvia A. Hobart, University of Wyoming
  

  • 8:00 a.m.
    The spectral radius of monotone graph properties.
    V. Nikiforov*, University of Memphis, Memphis, TN
    (1050-05-105)
  • 8:30 a.m.
    Almost distance-regular graphs.
    Edwin R. van Dam*, Tilburg University
    (1050-05-57)
  • 9:00 a.m.
    Partition Graphs.
    Mike Newman*, University of Ottawa
    (1050-05-138)
  • 9:30 a.m.
    Eigenvalues and connectivity of regular graphs.
    Sebastian M. Cioabă*, University of Delaware
    (1050-05-37)
  • 10:00 a.m.
    The Average Number of Block Interchanges Needed to Sort A Permutation.
    Miklos Bona*, University of Florida
    Ryan T Flynn, Penn State University
    (1050-05-63)
  • 10:30 a.m.
    On association schemes with thin thin residue.
    Paul-Hermann Zieschang*, University of Texas at Brownsville
    (1050-20-59)
• Saturday April 25, 2009, 3:00 p.m.-5:50 p.m.
  Special Session on Algebraic Graph Theory, Association Schemes, and Related Topics, II
  Room 218, Higgins Laboratories
  Organizers:
  William J. Martin, Worcester Polytechnic Institute martin@wpi.edu
  Sylvia A. Hobart, University of Wyoming
  

  • 3:00 p.m.
    On pseudocyclic association schemes.
    M. E. Muzychuk*, Netanya Academic College, Netanya, Israel
    I. N. Ponomarenko, Institute of Mathematics, St. Petersburg, Russia
    (1050-05-69)
  • 3:30 p.m.
    Distance-regular graphs with tails.
    Aleksandar Jurisic*, Faculty of Computer and Information Science, University of Ljubljana and IMFM
    Paul Terwilliger, Department of Mathematics, University of Wisconsin-Madison
    (1050-05-102)
  • 4:00 p.m.
    Nonexistence of Certain Amorphous Association Schemes.
    Jianmin Ma*, Oxford College of Emory University
    (1050-05-97)
  • 4:30 p.m.
    Towards a classification of the tridiagonal pairs.
    Paul Terwilliger*, University of Wisconsin
    (1050-05-162)
  • 5:00 p.m.
    An Inequality for Leonard Systems.
    John Caughman*, Portland State University
    (1050-05-170)
  • 5:30 p.m.
    Leonard pairs associated with $sl_2$.
    Hasan Alnajjar, University of Jordan
    Brian W Curtin*, University of South Florida
    (1050-05-88)
• Sunday April 26, 2009, 8:00 a.m.-10:50 a.m.
  Special Session on Algebraic Graph Theory, Association Schemes, and Related Topics, III
  Room 218, Higgins Laboratories
  Organizers:
  William J. Martin, Worcester Polytechnic Institute martin@wpi.edu
  Sylvia A. Hobart, University of Wyoming
  

  • 8:00 a.m.
    Cocliques and Polytopes.
    Chris D Godsil*, Combinatorics & Optimization, University of Waterloo
    (1050-05-110)
  • 8:30 a.m.
    Directed quotient graphs of bipartite graphs.
    Leif K Jorgensen*, Aalborg University
    (1050-05-108)
  • 9:00 a.m.
    Small Four Weight Spin Models.
    Ada Chan*, York University
    (1050-05-142)
  • 9:30 a.m.
    Hemisystems of unitary spaces.
    Tim Penttila*, Colorado State University
    (1050-05-68)
  • 10:00 a.m.
    The Combinatorics of Transitive Extensions.
    Mikhail H Klin, Ben Gurion University of the Negev
    Dale M Mesner, University of Nebraska
    Andrew J Woldar*, Villanova University
    (1050-05-58)
  • 10:30 a.m.
    A binary linear code and its combinatorial properties.
    Junhua Wu*, Worcester Polytechnic Institute
    (1050-05-161)
• Sunday April 26, 2009, 3:00 p.m.-5:50 p.m.
  Special Session on Algebraic Graph Theory, Association Schemes, and Related Topics, IV
  Room 218, Higgins Laboratories
  Organizers:
  William J. Martin, Worcester Polytechnic Institute martin@wpi.edu
  Sylvia A. Hobart, University of Wyoming
  

  • 3:00 p.m.
    The Bannai-Ito Conjecture.
    S. Bang*, Department of Mathematics/Pusan National University
    J H Koolen, Department of Mathematics/POSTECH
    V. Moulton, School of Computing Sciences/ University of East Anglia
    (1050-05-139)
  • 3:30 p.m.
    $Q$-polynomial association schemes which are not generated by a distance-regular graph.
    Jason Williford*, University of Colorado Denver
    (1050-05-103)
  • 4:00 p.m.
    Dual-tight cometric association schemes.
    Sho Suda, Graduate School of Information Sciences, Tohoku University
    Hajime Tanaka*, Graduate School of Information Sciences, Tohoku University
    Rie Tanaka, Graduate School of Information Sciences, Tohoku University
    (1050-05-116)
  • 4:30 p.m.
    Euclidean designs and coherent configurations.
    Etsuko Bannai*, Retiered. Fukuoka, Japan
    (1050-05-80)
  • 5:00 p.m.
    Distance-Regular Graphs Having Certain Completely Regular Subgraphs.
    Hiroshi Suzuki*, Department of Mathematics and Computer Science, International Christian University
    (1050-05-93)
  • 5:30 p.m.
    Terwilliger algebras of wreath products of one-class association schemes.
    Gargi Bhattacharyya, University of Baltimore
    Sung Y Song*, Iowa State University
    Rie Tanaka, Tohoku University
    (1050-05-101)

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Inquiries:  meet@ams.org