Hirofumi Tsumura (Dr.Sc)

Professor

Department of Mathematics and Information Sciences

Tokyo Metropolitan University

1-1, Minami-Ohsawa, Hachioji, Tokyo 192-0397 Japan

E-mail: tsumura (+ @tmu.ac.jp)

Tel: +81-426-77-2447,  Fax: +81-426-77-2481

 

Recent Research Interests

● Bernoulli numbers, Bernoulli polynomials, multiple Bernoulli numbers

● Riemann zeta-function, Dirichlet L-functions, Various multiple zeta-functions

● Witten zeta-functions, Root systems, Weyl group

● Eisenstein series, Elliptic functions, Hurwitz numbers

● Maillet determinants, Dem’janenko Matrices of imaginary abelian fields

 

Refereed Papers

[1]    On a p-adic interpolation of the generalized Euler numbers and its applications, Tokyo J. Math. 10 (1987), 281-293.

[2]    On the values of a q-analogue of the p-adic L-function, Memo. Fac. Sci., Kyushu Univ. 44 (1990), 49-60.

[3]    On some congruences for the Bell numbers and for the Stirling numbers, J. Number Theory 38 (1991), 206-211.

[4]    A note on q-analogues of the Dirichlet series and q-Bernoulli numbers, J. Number Theory 39 (1991), 251-256.

[5]    On a q-analogue of the Log-Γ-function, Nagoya Math. J. 134 (1994), 57-64.

[6]    On evaluation of the Dirichlet series at positive integers by q-calculation, J. Number Theory 48 (1994), 383-391.

[7]    On a direct sum decomposition of the Demjanenko matrix, Acta Arith. 77(1996), 71-76.

[8]    On p-adic Log-Γ-functions associated to the Lubin-Tate formal groups, Tokyo J. Math. 19 (1996), 147-153.

[9]    On Demjanenko's matrix and Maillet's determinant for imaginary abelian number fields, J. Number Theory 60 (1996), 70-80.

[10] A note on q-analogues of Dirichlet series, Proc. Japan Acad., Ser. A, 75 (1999), 23-25.

[11] A certain class of rapidly convergent series representations for ζ(2n+1), J. Comp. Appl. Math. 118 (2000), 323-335 (with H.M. Srivastava).

[12] New rapidly convergent series representations for ζ(2n+1), L(2n,χ) and L(2n+1,χ), Math. Sci. Res. Hot-Line 4 (2000), 17-24 (with H.M. Srivastava).

[13] A note on the Demjanenko matrices related to the cyclotomic Zp-extension, Proc. Japan Acad., Series A, 76 (2000), 99-103.

[14] Certain classes of rapidly convergent series representations for L(2n,χ) and L(2n+1,χ), Acta Arith. 100 (2001), 195-201 (with H.M. Srivastava).

[15] On some modules attached to the Lubin-Tate formal groups, Tokyo J. Math. 23 (2001), 441-465 (with K.Kozuka).

[16] On modification of the q-L-series and its applications, Nagoya Math. J. 164 (2001), 185-197.

[17] On some combinatorial relations for Tohnheim’s double series, Acta Arith. 105 (2002), 239-252.

[18] Inductive construction of rapidly convergent series representations forζ(2n+1), Internat. J. Comput. Math. 80 (2003), 1161-1173 (with H.M. Srivastava).

[19] On alternating analogues of Tornheim's double series, Proc. Amer. Math. Soc. 131 (2003), 3633-3641.

[20] Combinatorial relations for Euler-Zagier sums, Acta Arith. 111 (2004), 27-42.

[21] Evaluation formulas for Tornheim's type of alternating double series, Math. Comp. 73 (2004), 251-258.

[22] An elementary proof of Euler's formula for ζ(2m), Amer. Math. Monthly 111, No. 5 (2004), 430-431

[23] Multiple harmonic series related to multiple Euler numbers, J. Number Theory 106 (2004), 155-168.

[24] On Witten's type of zeta values attached to SO(5), Arch. Math. (Basel) 84 (2004), 147-152.

[25] On evaluation formulas for double L-values, Bull. Austral. Math. Soc. 70 (2004), 213-221.

[26] Multiple Dedekind sums and relative class number formulae, Math. Nachr. 278 (2005), 1673-1680 (with M. Hirabayashi).

[27] On Mordell-Tornheim zeta values, Proc. Amer. Math. Soc. 133 (2005), 2387-2393.

[28] Certain functional relations for the double harmonic series related to the double Euler numbers, J. Austral. Math. Soc., Ser. A. 79 (2005), 319-333.

[29] On some functional relations between Mordell-Tornheim double L-functions and Dirichlet L-functions, J. Number Theory 120 (2006), 161-178.

[30] Generalized multiple Dirichlet series and generalized multiple polylogarithms, Acta Arith. 124 (2006), 139-158 (with K. Matsumoto).

[31] On Witten multiple zeta-functions associated with semisimple Lie algebras I, Ann. Inst. Fourier (Grenoble) 56 (2006), 1457-1504 (with K. Matsumoto).

[32] Zeta-functions of root systems, in ‘The Conference on L-functions’ (Fukuoka 2006), L. Weng and M. Kaneko (eds), World Sci. Publ., Hackensack, NJ, 2007, pp. 115-140 (with K. Matsumoto and Y. Komori).

[33]  On certain polylogarithmic double series, Arch. Math. (Basel) 88 (2007), 42-51.

[34]  On functional relations between the Mordell-Tornheim double zeta functions and the Riemann zeta function, Math. Proc. Cambridge Philos. Soc. 142 (2007), 395-405.

[35]  On the parity conjecture for multiple L-values of conductor four, Tokyo J. Math. 30 (2007), 21-40.

[36]  A new method of producing functional relations among multiple zeta-functions, Quart. J. Math. (Oxford) 59 (2008), 55-83 (with K. Matsumoto).

[37]  On value-relations, functional relations and singularities of Mordell-Tornheim and related triple zeta-functions, Acta Arith. 132 (2008), 99-125 (with K. Matsumoto, T. Nakamura and H. Ochiai).

[38]  On certain analogues of Eisenstein series and their evaluation formulas of Hurwitz type, Bull. London Math. Soc. 40 (2008), 85-93.

[39]  Zeta and L-functions and Bernoulli polynomials of root systems, Proc. Japan Acad., Series A 84 (2008), 62-67 (with Y. Komori and K. Matsumoto).

[40]  On multiple analogues of Ramanujan's formulas for certain Dirichlet series, J. Théor. Nombres Bordeaux 20 (2008), 217-224.

[41]  Functional relations and special values of Mordell-Tornheim triple zeta and L-functions, Proc. Amer. Math. Soc. 136 (2008), 2135-2145 (with K. Matsumoto, T. Nakamura).

[42]  On alternating analogues of Tornheim's double series II, to appear in Ramanujan J.

[43]  Multiple Dirichlet series interpolating Bell numbers and Stirling numbers, to appear in Rocky Mountain J. Math.

[44]  Functional relations among certain double polylogarithms and their character analogues, to appear in Šiauliai Math. Semin. (with K. Matsumoto).


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