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Bounds for Multiple Recurrence Rate and Dimension 多重递归率和维数的界限
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-06-01 DOI: 10.3836/TJM/1502179281
Michihiro Hirayama
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引用次数: 2
Homology of the Complex of All Non-trivial Nilpotent Subgroups of a Finite Non-solvable Group 有限不可解群的所有非平凡幂零子群复合体的同调
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-06-01 DOI: 10.3836/TJM/1502179264
N. Iiyori, M. Sawabe
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引用次数: 0
Classification of Very Cuspidal Representations of $mathrm{GL}_m(D)$ $ mathm {GL}_m(D)$的极尖表示的分类
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-06-01 DOI: 10.3836/TJM/1502179296
Kazutoshi Kariyama
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引用次数: 0
A Calculation of the Hyperbolic Torsion Polynomial of a Pretzel Knot Pretzel结的双曲扭转多项式的计算
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-06-01 DOI: 10.3836/TJM/1502179265
Takayuki Morifuji
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引用次数: 0
Conformal Slant Riemannian Maps to Kähler Manifolds Kähler流形的共形斜黎曼映射
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-06-01 DOI: 10.3836/TJM/1502179277
M. Akyol, B. Şahin
{"title":"Conformal Slant Riemannian Maps to Kähler Manifolds","authors":"M. Akyol, B. Şahin","doi":"10.3836/TJM/1502179277","DOIUrl":"https://doi.org/10.3836/TJM/1502179277","url":null,"abstract":"","PeriodicalId":48976,"journal":{"name":"Tokyo Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42537659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Crystallographic Groups Arising from Teichmüller Spaces 由teichmller空间产生的晶体群
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-06-01 DOI: 10.3836/TJM/1502179302
Yukio Matsumoto
{"title":"Crystallographic Groups Arising from Teichmüller Spaces","authors":"Yukio Matsumoto","doi":"10.3836/TJM/1502179302","DOIUrl":"https://doi.org/10.3836/TJM/1502179302","url":null,"abstract":"","PeriodicalId":48976,"journal":{"name":"Tokyo Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47839232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Logarithmic Structures of Fontaine-Illusie. II ---Logarithmic Flat Topology 方丹幻相的对数结构。对数平面拓扑
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-05-25 DOI: 10.3836/tjm/1502179316
Kazuya Kato
{"title":"Logarithmic Structures of Fontaine-Illusie. II ---Logarithmic Flat Topology","authors":"Kazuya Kato","doi":"10.3836/tjm/1502179316","DOIUrl":"https://doi.org/10.3836/tjm/1502179316","url":null,"abstract":"This is a continuation of the paper [K1] on the foundation of log geometry in the sense of Fontaine-Illusie. Here we discuss mainly log flat topologies, especially log flat descent theory. This paper was started around 1991, and was circulated as an incomplete preprint for a long time. Since then, some contents of this paper have been reproduced by several authors with proofs ([Ha], [KS], [Ni], [Na2], [Ol], ...). A. Moriwaki [M] also studied flat descents in the category of log schemes. In the parts which were incomplete in the circulated preprint, we sometimes referred to these papers instead of completing the original proofs. In particular, the author does not claim the results with ∗ (i.e., two theorems 7.1, 7.2 and one proposition 6.5) are his results. Since the paper is already referred to in many published works, in the other parts, we preferred to preserve the original, circulated form. In both parts, we tried to preserve the original numberings of definitions and propositions. The author wishes to express his special thanks to Chikara Nakayama who helped him a lot in the completion of this paper. He is also thankful to Luc Illusie, Takeshi Saito, Takeshi Kajiwara, and Takeshi Tsuji for helpful discussions. The author is partially supported by NSF Award 1601861.","PeriodicalId":48976,"journal":{"name":"Tokyo Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47849095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 36
The Poisson Bracket Invariant for Open Covers Consisting of Topological Disks on Surfaces 曲面上由拓扑盘组成的开盖的泊松括号不变量
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-05-20 DOI: 10.3836/tjm/1502179384
Kun Shi, Guangcun Lu
{"title":"The Poisson Bracket Invariant for Open Covers Consisting of Topological Disks on Surfaces","authors":"Kun Shi, Guangcun Lu","doi":"10.3836/tjm/1502179384","DOIUrl":"https://doi.org/10.3836/tjm/1502179384","url":null,"abstract":"L. Buhovsky, A. Logunov and S. Tanny proved the (strong) Poisson bracket conjecture by Leonid Polterovich in dimension 2. In this note, instead of open cover consisting of displaceable sets in their work, we consider open cover constituted of topological discs and give a necessary and sufficient condition that Poisson bracket invariants of these covers are positive.","PeriodicalId":48976,"journal":{"name":"Tokyo Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47728860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Large Time Asymptotics for a Cubic Nonlinear Schrödinger System in One Space Dimension, II 一维三次非线性Schrödinger系统的大时间渐近性，2
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-05-17 DOI: 10.1619/fesi.64.361
Chunhua Li, Y. Nishii, Yuji Sagawa, Hideaki Sunagawa
{"title":"Large Time Asymptotics for a Cubic Nonlinear Schrödinger\u0000 System in One Space Dimension, II","authors":"Chunhua Li, Y. Nishii, Yuji Sagawa, Hideaki Sunagawa","doi":"10.1619/fesi.64.361","DOIUrl":"https://doi.org/10.1619/fesi.64.361","url":null,"abstract":"This is a sequel to the paper \"Large time asymptotics for a cubic nonlinear Schrodinger system in one space dimension\" by the same authors. We continue to study the Cauchy problem for the two-component system of cubic nonlinear Schrodinger equations in one space dimension. We provide criteria for large time decay or non-decay in $L^2$ of the small amplitude solutions in terms of the Fourier transforms of the initial data.","PeriodicalId":48976,"journal":{"name":"Tokyo Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48828258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Rationally Elliptic Toric Varieties 合理椭圆环型品种
IF 0.6 4区 数学
Tokyo Journal of Mathematics Pub Date : 2019-04-18 DOI: 10.3836/tjm/1502179327
I. Biswas, V. Muñoz, A. Murillo
{"title":"Rationally Elliptic Toric Varieties","authors":"I. Biswas, V. Muñoz, A. Murillo","doi":"10.3836/tjm/1502179327","DOIUrl":"https://doi.org/10.3836/tjm/1502179327","url":null,"abstract":"We give a characterization of all complete smooth toric varieties whose rational homotopy is of elliptic type. All such toric varieties of complex dimension not more than three are explicitly described.","PeriodicalId":48976,"journal":{"name":"Tokyo Journal of Mathematics","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42415694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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