Office Address

Research Field

Paper

1. An inequality for finite permutation groups
   J. Combinatorial Theory,Ser. A, vol.27 (1979), 119
2. Sharp permutation groups
   J. Math. Soc. Japan vol.33 (1981), 435-444. (with T. Ito)
3. A note on a conjecture of K. Harada
   Proc. Japan Academy, vol.57, Ser.A(1981), 128-129. (with T. Okuyama)
4. An equation on a finite group, Suugaku, vol.33 (1981), 81-82 (with K. Nomura).
5. On 3-blocks with an elementary abelian defect group of order 9
   J. Fac. Univ. Tokyo, vol.31(1984), 23-58.
6. Two remarks on Harada conjecture
   Sci. Pap. Coll. Arts and Sci. Univ. Tokyo, vol.34(1984), 5-16.
7. Sharp characters of finite groups
   J. of Algebra vol.115(1988), 125-143. (with P. J. Cameron)
8. On the number of elements which are not n-th powers in finite groups
   Comm. in Algebra, vol.17(1989), 2865-2870. (with E. Bannai, M. Deza, P. Frankl and A. C. Kim)
9. On the Cartan matrix of a finite group with normal p-subgroup
   Bull.Dept. Gen. Edu. Tokyo Medical and Dental Univ., vol 21(1991), 51-54.
10. The connected components of Bratteli diagrams for finite groups
    Bull. Dept. Gen. Edu. Tokyo Medical and Dental Univ., vol 22(1992), 31-34.
11. Sharp characters of finite groups of type {-1,1}
    J. of Algebra, vol.152(1992), 248-258. (with P. J. Cameron and T. Kataoka)
12. Sharp characters whose values at non-identity elements are 0 and a family of algebraic conjugates
    J. of Algebra, vol.161(1993), 216-229. (with S. Nozawa)
13. Some remarks on eigenvalues of the Cartan matrix in finite groups
    Comm. in Algebra, vol.21(1993), 3839-3860. (with T. Wada)
14. Sharp characters with only one rational value
    Comm. in Algebra, vol.22(1994), 95-115. (with D. Alvis and S. Nozawa)
15. Finite groups with a condition on class lengths and character degrees
    Bull. Dept. Gen. Edu. Tokyo Medical and Dental Univ., vol 26(1996), 3-5.
16. Character products and Q-polynomial group association schemes
    J. of Algebra, vol.226(2000), 533-546. (with H. Suzuki)