JK2015

Program

Schedule

January 29-30, 10:00-17:30
January 31, 9:30-12:15

Program

January 29th (Thursday)
 at Multipurpose Hall in Nakamura Centenary Memorial Hall
  • Opening Speech Makoto Tagami
  • 10:00 -- 10:45 Sejeong Bang (Yeungnam University)
    • Distance-regular graphs without 4-claws
  • 11:00 -- 11:45 Jae-Ho Lee (Tohoku University)
    • Nonsymmetric Askey-Wilson polynomials and Q-polynomial distance-regular graphs
  • 13:30 -- 14:15 Gary Greaves (Tohoku University)
    • Eigenvalues of symmetric matrices and tridiagonal matrices
  • 14:30 -- 15:15 Hiroshi Nozaki (Aichi University of Education)
    • Large regular graphs for given second-largest eigenvalue
  • 15:45 -- 16:30 Ilkyoo Choi (KAIST)
    • Improper coloring of planar graphs
  • 16:45 -- 17:30 Takao Komatsu (Wuhan University)
    • On computation of arbitrary integer powers for certain type of band matrices with Fibonacci numbers
January 30th (Friday)
 at Lecture Room 4-1B in Education & Research 4
  • 10:00 -- 10:45 Sho Suda (Aichi University of Education)
    • Mutually unbiased Bush-type Hadamard matrices and association schemes
  • 11:00 -- 11:45 Hyonju Yu (Pohang University of Science and Technology)
    • Isomorphism classes of association schemes induced by Hadamard matrices
  • 13:30 -- 14:15 Tao Feng (Zhejiang University)
    • Some algebraic aspects of designs, codes and finite geometry
  • 14:30 -- 15:15 Takayuki Okuda (Hiroshima University)
    • A new relative upper bound for equiangular lines and nonexistance of tight spherical designs of harmonic index 4
  • 15:45 -- 16:30 Masanori Sawa (Kobe University)
    • On a system of Diophantine equations and quadrature on the real line
  • 16:45 -- 17:30 Keisuke Shiromoto (Kumamoto University)
    • On the critical exponent of a linear code and a matroid
  • 18:30 -- Banquet
January 31st (Saturday)
 at Multipurpose Hall in Nakamura Centenary Memorial Hall
  • 9:30 -- 10:15 Younjin Kim (KAIST)
    • On extremal combinatorial problems of Noga Alon
  • 10:30 -- 11:15 Hirotaka Ono (Kyushu University)
    • Degree-constrained graph orientation: maximum satisfaction and minimum violation
  • 11:30 -- 12:15 Seung Jin Lee (KIAS)
    • Affine Schubert calculus and Pieri rule for the affine flag variety
  • Closing Speech Hirotake Kurihara

Abstracts

Abstracts are available from Here.