Tsukuba Journal of Mathematics

$Tsukuba Journal of Mathematics (cover)$

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ISSN Printed edition 0387-4982

Online edition 2423-821X

2022 Journal Impact Factor: 0.7

　Aim and History

The aim of this journal is to publish original contributions to pure and applied mathematics. All papers are refereed.

Tsukuba journal of mathematics is a continuation of Science Reports of the Tokyo Bunrika Daigaku, Sect. A, Vol. 1-Vol.4, No 82(1930-1953) and Science Reports of the Tokyo Kyoiku Daigaku,Sect. A, Vol. 4, No.83-Vol. 13, No. 382 (1954-1977).

　Call for Papers

The main purpose of Tsukuba Journal of Mathematics is to promote research activities in pure and applied mathematics by publishing original research papers. Selection for publication is on the basis of reports from referees commissioned by the editorial committee.

For more details, please see Guide for Authors.

　Editorial Committee

Tomoyuki Kakehi, Chair
Akira Masuoka
Hikaru Yamamoto
Kazuyoshi Yata

　Associate Editors

Shigeki Akiyama
　Makoto Aoshima
　Ryoki Fukushima
　Yuji Hamana
　Kazuhiro Kawamura
　Hajime Ono
　Daisuke Sagaki
　Yoshihiro Takeyama

　Advisory Board
Professor Hiroshi Isozaki ( Professor Emeritus, Department of Mathematics, University of Tsukuba, Japan)
Professor Takao Yamaguchi ( Professor Emeritus, Department of Mathematics, Kyoto University, Japan
Professor Emeritus, University of Tsukuba,Japan)
Professor Akito Tsuboi ( Professor Emeritus, University of Tsukuba,Japan)

　Contact and Subscription Information

Communications with this publication should be addressed to the chair of the editorial committee of Tsukuba Journal of Mathematics:

Tomoyuki Kakehi (the chair of the editorial committee)
Department of Mathematics
University of Tsukuba
Tsukuba, Ibaraki 305-8571
Japan

E-mail address : $journal at math.tsukuba.ac.jp$

Subscription Agent
Japan Publications Trading Co., Ltd.
1-2-1 Sarugaku-cho, Chiyoda-ku
Tokyo 101-0064
Japan

E-mail address : $serials at$
Fax : +81-3-3292-0410

Table of contents

Tsukuba Journal of Mathematics

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Vol.48, No.1(2024) ※ PDF is limited to exchange partner.

Author	Title	Page
Keita Goto	On Berkovich Double Residue Fields and Birational Models	1
Michio Ozeki	5-design and counter 5-design in the binary Golay code of length 24	43
Hideto Iwata	On some analytic properties of a function associated with the Selberg class satisfying certain special conditions	105
Tomoya Akamatsu	Weak Kantorovich difference and associated Ricci curvature of hypergraphs	131

Vol.47, No.2(2023) ※ PDF is limited to exchange partner.

Author	Title	Page
Yoshihiro Abe	Structural Properties of ideals over P_Kλ II	127
Makoto NAKAMURA	On the Cauchy problem for a semilinear Newton equation of motion derived from a semilinear Schrödinger equation in homogeneous and isotropic spacetimes	153
Yoshio Tanaka and Yoshimi Kitamura	Algebraic order topologies, and related matters	191
Alex Patkowski	On Salem's Integral Equation and Related Criteria	207
Masaya Kawamura	Non-existence of 1-st Gauduchon metric in the conformal class of a metric on 6-dimensional almost Hermitian manifolds	215
Yu Ohno	Homogeneous Structures on S²× R and H² × R	239

Vol.47, No.1(2023) ※ PDF is limited to exchange partner.

Author	Title	Page
Hiroshi Sawai	Vaisman structures on LCK solvmanifolds	1
Yasuhito Nakajima	Minimal tropical bases for Bergman fans of matroids	19
Kenta Tsukuura	On the centeredness of saturated ideals	29
Takanobu Aoyama	The canonical lattice isomorphism between topologies compatible with a vector space and subspaces	41
Jiryo Komeda and Makiko Mase	Pointed curves on K3 surfaces which are double covers of rational elliptic surfaces	65
Tomoya Machide	Computations about formal multiple zeta spaces defined by binary extended double shuffle relations	83
Yasutsugu Fujita, Maohua Le and Nobuhiro Terai	A note on the ternary purely exponential Diophantine equation f^x+(f+g)^y=g^z	113
Toshikazu Miyashita	Corrigendum to Realizations of inner automorphisms of order four and fixed points subgroups by them on the connected compact exceptional Lie group E8 Part III, Tsukuba J. Math., Vol. 46, No. 1 (2022), 39–65	125

Vol.46, No.2(2022) ※ PDF is limited to exchange partner.

Author	Title	Page
Frédéric Chapoton	Multiple T-values with one parameter	153
Honoka Kobayashi	Ruled Surfaces with Null Curves and Frenet Frame in Pseudo-Sphere and Pseudo-Hyperbolic Space	165
Tomoya Nakamura	Hom-Poisson-Nijenhuis structures and Hom-Dirac structures	193
Nobutaka Boumuki	On The Dimensions of Vector Spaces Concerning Holomorphoc Vector Bundles Over Elliptic Orbits	217
Joerg Brendle	The higher Cichon diagram in the degenerate case	255
Yohei Ito	Erratum to "ℂ-Constructible Enhanced Ind-Sheaves"	271

Vol.46, No.1(2022) ※ PDF is limited to exchange partner.

Author	Title	Page
Qi Wang	On τ-Tilting Finite Simply Connected Algebras	1
Toshikazu Miyashita	Realizations of Inner Automorphisms of Order Four and Fixed Points Subgroups by Them on The Connected Compact Exceptional Lie Group E₈, Part III	39
Fumichika Takamizo, Masamichi Yoshida	Some class of cubic Pisot numbers with niteness property	67
Hirotaka Kobayashi	On a certain sum of the Derivatives of Dirichlet L-Functions	121
Alexander E. Patkowski	On Arithmetic Series Involving the Fractional Part Function	145