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2019.1.1∼2019.12.31 Author(S) 研究報告目録（Annual Records on Academic Activities） : Title 2019.1.1～2019.12.31 Author(s) - 琉球大学理学部紀要 = BULLETIN OF THE FACULTY OF Citation SCIENCE UNIVERSITY OF THE RYUKYUS(108): 33-79 Issue Date 2020-03 URL http://hdl.handle.net/20.500.12000/48029 Rights 32 Kazuhito Ogihara, Takerou Ooya, Eiken Kuniyoshi, Toshimasa Suzuka, and Matsutake Higa 33 Bull. Fac. Sci. Univ. Ryukyus, No. 108, 33−79 (2020) 研究報告目録（Annual Records on Academic Activities） 2019.1.1～2019.12.31 数理科学科 (Department of Mathematical Sciences) 論文・著書（Articles） K. Kodaka, The generalized Picard groups for finite dimensional C*-Hopf algebra coactions on unital C*-algebras, Turkish J. Math., 43 (2019), no. 5, 2511-2539. M. Ito and M. Noumi, A determinant formula associated with the elliptic hypergeometric integrals of type BCn. Journal of Mathematical Physics 60 (July 2019), 071705, 31 pp. T. Sudo, The algebraic and geometric classification of generically non-degenerate projections of matrix algebras over complex numbers, Bulletin of the Faculty of Science, University of the Ryukyus, No. 107, (March 2019) 1-31. T. Sudo, The bottom line shaking up studying the basic noncommutative geometry, towards understanding group C*-algebras and more ahead, Ryukyu Mathematical Journal, Vol. 32 (December 2019), 1-78. T. Hoge, T. Mano, G. Rohrle and C. Stump, Freeness of multi-reflection arrangements via primitive vector fields, Advances in Mathematics, 350 (July 2019), 63-96. DOI 10.1016/j.aim.2019.04.044 H. Kawakami and T. Mano, Regular flat structure and generalized Okubo system, Communications in Mathematical Physics, 369 (July 2019), 403-431. DOI 10.1007/s00220-019-03330-w T. Mano, Potential vector fields and isomonodromic tau functions in terms of flat coordinates, "Complex Differential and Difference Equations" in the series De Gruyter Proceedings in Mathematics, (November 2019), 327-342. DOI 10.1515/9783110611427-012 M. Kato, T. Mano and J. Sekiguchi, Solutions to the extended WDVV equations and the Painleve VI equation, "Complex Differential and Difference Equations" in the series De Gruyter Proceedings in Mathematics, (November 2019), 343-363. DOI 10.1515/9783110611427-013 34 35 K. Kimoto and S. T. Lee, Highest Weight Vectors in Plethysms, Communications in Mathematical Physics (December 2019), https://doi.org/10.1007/s00220-019-03639-6 木本 一史，レクチャー離散数学―グラフの世界への招待，ライブラリ新数学基礎テキ スト Q6，サイエンス社，2019 年 5 月． M. Hayashi, Regularity of the Local Time of Diffusions on the Positive Real Line with Reflection at Zero, Communications on Stochastic Analysis, Vol. 13, No. 1, Article 2, June 2019, pp.1-25 Y. Hashimoto, Key recovery attack on Circulant UOV/Rainbow, JSIAM Letters, 11 (August 2019), 45-48. Y. Hashimoto, Y. Ikematsu, T. Takagi, Chosen message attack on multivariate signature ELSA at Asiacrypt 2017, Journal of Information Processing, 27 (September 2019), 517-524. Y. Hashimoto, Asymptotic behaviors of class number sums associated with Pell-type equations, Mathematische Zeitschrift, 292 (October 2019), 641-654. K. Iriye, D. Kishimoto, T. Matsushita, Relative phantom maps, Algebraic and Geometric Topology, Volume 19, Number 1 (2019), 341-362. T. Matsushita, Matching complexes of small grids, The Electronic Journal of Combinatorics, Volume 26, Issue 3, (July, 2019) T. Matsushita, Z2-indices and Hedetniemi's conjecture, Discrete & Computational Geometry, Volume 62, Issue 3, (October 2019), 662–673 口頭発表等（Meeting presentations） Masahiko Ito, Elliptic extension of Gustafson’s q-integral of type G2, 研究集会 "Elliptic integrable systems, special functions and quantum field theory" 2019 年 6月, 北欧理論物 理学研究所(NORDITA), スウェーデン Masahiko Ito, Elliptic extension of Gustafson’s q-integral of type G2, 15th International Symposium on Orthogonal Polynomials, Special Functions and Applications (OPSFA), 2019 年 7 月, Research Institute for Symbolic Computation (RISC) of the Johannes Kepler University, オーストリア T. Mano, Flat structure on the orbit space of a complex reflection group, Silver Workshop: Complex Geometry and Non-Commutative Geometry, 2019 年 2 月, 沖縄科学技術大学 院大学 眞野 智行, 複素鏡映群の平坦不変式と多重鏡映面配置, 金沢大学数理学談話会, 2019 年 10 月, 金沢大学 K. Kimoto, Two-variable zeta functions for finite graphs, Zeta Functions in OKINAWA 2019， 34 35 2019 年 10 月，沖縄コンベンションセンター． 木本 一史・若山 正人，非可換調和振動子に現れるモジュラー性，日本数学会 2019 年 度秋季総合分科会，2019 年 9 月，金沢大学． K. Kimoto, Generalized group-subgroup pair graphs, International Symposium on Mathematics, Quantum Theory, and Cryptography (MQC 2019)，2019 年 9 月，九州大学． Y. Hashimoto, Recent developments in multivariate public key cryptosystems, International Symposium on Mathematics, Quantum Theory, and Cryptography (MQC 2019), 2019 年 9 月、九州大学. Y. Hashimoto, An error term estimation of the prime geodesic theorem for the modular group, Zeta Functions in OKINAWA 2019, 2019 年 10 月, 沖縄コンベンションセンター. Y. Mishiba, On Furusho's Conjecture over Function Fields, Arithmetic of Function Fields and Diophantine Geometry, 2019 年 5 月, 国立台湾大学(台湾) Y. Mishiba, Taylor coefficients of t-motivic multiple zeta values, NCTS Seminar on Number Theory, 2019 年 9 月, 国立清華大学(台湾) 松下 尚弘， Fundamental groups of neighborhood complexes, The 5-th workshop on Geometric Group Theory, 2019 年 3 月, Okinawaken Seinenkaikan 松下 尚弘，小さなグリッドグラフのマッチング複体のホモトピー型について，トポロ ジー金曜セミナー，2019 年 6 月，九州大学大学院数理学府 松 下 尚 弘 ， Relative phantom maps and rational homotopy, The Homotopy Theory Symposium, 2019 年 10 月，北海道大学大学院理学研究院 松下 尚弘， Relative phantom maps, The Third Pan-Pacific International Conference on Topology and Applications, 2019 年 11 月，Sichuan University 松下 尚弘， Matching complexes of small grids, 微分空間・トポロジーと組み合わせ構造， 2019 年 12 月，城崎健康福祉センター 36 37 物質地球科学科 （Department of Physics and Earth sciences） － 物理系 －（Physice Course） 論文・著書（Article） Y. Onodera, S. Kohara, S. Tahara, A. Masuno, H. Inoue, M. Shiga, A. Hirata, K. Tsuchiya, Y. Hiraoka, I. Obayashi, K. Ohara, A. Mizuno, Y. Katsuya, and O. Sakata: Understanding of diffraction pattern and homology in glassy, liquids, and amorphous materials, J. Ceram. Soc. Jpn. 127, 853-863 (2019. 12). I. Oda: Higgs potential from Wick rotation in conformal BSM, Modern Physics Letters A 34, 1950257 (2019. 7). I. Oda: Scale symmetry and Weinberg's no-go theorem in the cosmological constant problem, Advanced Studies in Theoretical Physics 13, 195-214 (2019. 9). I. Oda: Planck and electroweak scales emerging from Weyl conformal gravity, Proceedings of Science 057, 347 (1-12) (2019. 9). W. Iha, M. Kakihana, S. Matsuda, F. Honda, Y. Haga, T. Takeuchi, M. Nakashima, Y. Amako, J. Gouchi, Y. Uwatoko, M. Hedo, T. Nakama, Y. Ōnuki: Anomalous ferromagnetic ordering in EuCuP, J. Alloy. Compd. 788, 361-366 (2019. 2). S. Kawakatsu, M. Kakihana, M. Nakashima, Y. Amako, A. Nakamura, D. Aoki, T. Takeuchi, H. Harima, M. Hedo, T. Nakama, Y. Ōnuki: De Haas–van Alphen experiment and Fermi surface properties in field-induced ferromagnetic state of MnP, J. Phys. Soc. Jpn. 88, 044705 (1-7) (2019. 3). M. Kakihana, K. Nishimura, T. Takeuchi, Y. Haga, H. Harima, M. Hedo, T. Nakama, Y. Ōnuki: Fermi surface properties of semimetals YSb, LuSb, YBi, and LuBi studied by the de Haas– van Alphen effect, J. Phys. Soc. Jpn. 88, 044712 (1-11) (2019. 3). T. Takeuchi, M. Kakihana, M. Hedo, T. Nakama, Y. Ōnuki: Magnetic field versus temperature phase diagram for H || [001] in the trillium lattice antiferromagnet EuPtSi, J. Phys. Soc. Jpn. 88, 053703 (1-5) (2019. 4). T. Sakakibara, S. Nakamura, S. Kittaka, M. Kakihana, M. Hedo, T. Nakama, Y. Ōnuki: Fluctuation-induced first-order transition and tricritical point in EuPtSi, J. Phys. Soc. Jpn. 88, 093701 (1-5) (2019. 7). Y. Homma, M. Kakihana, Y. Tokunaga, M. Yogi, M. Nakashima, A. Nakamura, Y. Shimizu, D. X. Li, A. Maurya, Y. J. Sato, F. Honda, D. Aoki, Y. Amako, M. Hedo, T. Nakama, Y. Ōnuki: Magnetic fluctuation and first-order transition in trillium lattice of EuPtSi observed by 151Eu Mössbauer spectroscopy, J. Phys. Soc. Jpn. 88, 094702 (1-8) (2019. 8). M. Kakihana, D. Aoki, A. Nakamura, F. Honda, M. Nakashima, Y. Amako, T. Takeuchi, H. Harima, M. Hedo, T. Nakama, Y. Ōnuki: Unique magnetic phases in the skyrmion lattice and Fermi surface properties in cubic chiral antiferromagnet EuPtSi, J. Phys. Soc. Jpn. 88, 36 37 094705 (1-10) (2019. 8). C. Tabata, T. Matsumura, H. Nakao, S. Michimura, M. Kakihana, T. Inami, K. Kaneko, M. Hedo, T. Nakama, Y. Ōnuki: Magnetic-field induced triple-q magnetic order in the trillium lattice antiferromagnet EuPtSi studied by resonant X-ray scattering, J. Phys. Soc. Jpn. 88, 093704 (1-6) (2019. 8). S. Taira, C. Yasuda, T. Momoi, and K. Kubo: Spin-wave theory for the scalar chiral phase in the multiple-spin exchange model on a triangular lattice, J. Phys. Soc. Jpn. 88, 014701 (1-12) (2019. 1). F. Sakano, K. Nakamura, T. Kouchi, T. Shiota, F. Engetsu, K. Suzuki, R. Horikawa, M. Yashima, S. Miyasaka, S. Tajima, A. Iyo, Y. -F. Guo, K. Yamaura, E. Takayama-Muromachi, M. Yogi, and H. Mukuda: High-Tc iron phosphide superconductivity enhanced by reemergent antiferromagnetic spin fluctuations in [Sr4Sc2O6]Fe2(As1−xPx)2 probed by NMR, Phys. Rev. B 100, 094509 (1-10) (2019. 9). Y. Homma, M. Kakihana, Y. Tokunaga, M. Yogi, M. Nakashima, A. Nakamura, Y. Shimizu, D. Li, A. Maurya, Y. J. Sato, F. Honda, D. Aoki, Y. Amako, M. Hedo, T. Nakama, and Y. Ōnuki: Magnetic fluctuation and first-order transition in trillium lattice of EuPtSi observed by 151Eu Mössbauer spectroscopy, J. Phys. Soc. Jpn. 88, 094702 (1-8) (2019. 9). K. Kiuchi, K. Kyutoku, M. Shibata, K. Taniguchi: Revisiting the lower bound on tidal deformability derived by AT 2017gfo, Astrophys. J. Lett. 876, L31(1-6) (2019. 5). S. Kawamura et al., K. Taniguchi (145 名中 129 番目): Space gravitational-wave antennas DECIGO and B-DECIGO, Intern. J. Modern Phys. 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