VOL. 73 · NO. 1 | 2021
 
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Tohoku Math. J. (2) 73 (1), (2021)
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Articles
Kazumi Tsukada
Tohoku Math. J. (2) 73 (1), 1-28, (2021) DOI: 10.2748/tmj.20191202
KEYWORDS: a quaternion projective space, a quaternionic manifold, transversally complex submanifolds, Gauss maps, 53C26, 53B25
Andrea Loi, Michela Zedda, Fabio Zuddas
Tohoku Math. J. (2) 73 (1), 29-37, (2021) DOI: 10.2748/tmj.20191211
KEYWORDS: Calabi's diastasis function, Ricci flat metric, projectively induced metric, flag manifold, 53C55, 58C25, 58F06
Bin Chen, Lili Zhao
Tohoku Math. J. (2) 73 (1), 39-48, (2021) DOI: 10.2748/tmj.20191212
KEYWORDS: Finsler metrics, Ricci curvature, Liouville transformation, 53C60, 53B40
Kazuki Aoki
Tohoku Math. J. (2) 73 (1), 49-98, (2021) DOI: 10.2748/tmj.20191217
KEYWORDS: fourth-order nonlinear Schrödinger equation, global existence, the normal form method, 35Q55
John Machacek
Tohoku Math. J. (2) 73 (1), 99-104, (2021) DOI: 10.2748/tmj.20191223
KEYWORDS: toric varieties, factorization of birational maps, posets, 14M25, 06A07, 52B20
Keiichi Kato, Masaharu Kobayashi, Shingo Ito, Tadashi Takahashi
Tohoku Math. J. (2) 73 (1), 105-118, (2021) DOI: 10.2748/tmj.20191226
KEYWORDS: higher-order dispersive equations, short-time Fourier transform, modulation space, 35C15, 42B35
Toshihide Futamura, Tetsu Shimomura
Tohoku Math. J. (2) 73 (1), 119-136, (2021) DOI: 10.2748/tmj.20200120
KEYWORDS: metric measure space, Newtonian space, Musielak-Orlicz space, Poincaré inequality, Dirichlet energy integral, double obstacle problem, 46E35, 31B15
Daniel Cavey, Akihiro Higashitani
Tohoku Math. J. (2) 73 (1), 137-158, (2021) DOI: 10.2748/tmj.20200207
KEYWORDS: Fano polygon, cyclic quotient singularity, singularity content, $r$-modular sequence, Winding number, 14M25, 05A99, 14B05, 14J45
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