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Kyushu Journal of Mathematics最新文献

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UPPER BOUND FOR MONOIDAL TOPOLOGICAL COMPLEXITY 一元拓扑复杂度的上界
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2020-01-01 DOI: 10.2206/kyushujm.74.197
Norio Iwase, Mitsunobu Tsutaya
{"title":"UPPER BOUND FOR MONOIDAL TOPOLOGICAL COMPLEXITY","authors":"Norio Iwase, Mitsunobu Tsutaya","doi":"10.2206/kyushujm.74.197","DOIUrl":"https://doi.org/10.2206/kyushujm.74.197","url":null,"abstract":". We show that tc M ( M ) ≤ 2 cat ( M ) for a finite simplicial complex M . For example, we have tc M ( S n ∨ S m ) = 2 for any positive integers n and m .","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68557307","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
GAMMA FACTORS OF ZETA FUNCTIONS AS ABSOLUTE ZETA FUNCTIONS 函数的因子作为绝对函数
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2020-01-01 DOI: 10.2206/kyushujm.74.441
Hidekazu Tanaka
{"title":"GAMMA FACTORS OF ZETA FUNCTIONS AS ABSOLUTE ZETA FUNCTIONS","authors":"Hidekazu Tanaka","doi":"10.2206/kyushujm.74.441","DOIUrl":"https://doi.org/10.2206/kyushujm.74.441","url":null,"abstract":"We study the rationality of gamma factors associated to certain Hasse zeta functions. We show many explicit examples of rational gamma factors coming from products of GL(n).","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68557517","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: 1
CONNECTION FORMULAS RELATED WITH APPELL'S F2, HORN'S H2 AND OLSSON'S FP FUNCTIONS 与appeell的f2、horn的h2和olsson的fp函数相关的连接公式
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2020-01-01 DOI: 10.2206/kyushujm.74.15
K. Mimachi
{"title":"CONNECTION FORMULAS RELATED WITH APPELL'S F2, HORN'S H2 AND OLSSON'S FP FUNCTIONS","authors":"K. Mimachi","doi":"10.2206/kyushujm.74.15","DOIUrl":"https://doi.org/10.2206/kyushujm.74.15","url":null,"abstract":"Some of the connection problems associated with the system of differential equations E2, which is satisfied by Appell’s F2 function, are solved by using integrals of Euler type. The present results give another proof of connection formulas related with Appell’s F2, Horn’s H2 and Olsson’s FP functions, which are obtained by Olsson. 0. Introduction Appell’s hypergeometric function F2 is the analytic continuation of F2(a, b1, b2, c1, c2; x, y)= ∑ m,n≥0 (a)m+n(b1)m(b2)n m!n!(c1)m(c2)n xm yn, |x | + |y|< 1, where (a)n = 0(a + n)/0(a), and satisfies the system E2 of rank four [AKdF, Er]: (E2)  [ x(1− x) ∂2 ∂x2 − xy ∂2 ∂x∂y + {c1 − (a + b1 + 1)x} ∂ ∂x − b1 y ∂ ∂y − ab1 ] F = 0, [ y(1− y) ∂2 ∂y2 − xy ∂2 ∂x∂y + {c2 − (a + b2 + 1)y} ∂ ∂y − b2x ∂ ∂x − ab2 ] F = 0, which is defined on the space C2 { {x = 0} ∪ {x = 1} ∪ {y = 0} ∪ {y = 1} ∪ {x + y = 1} } ⊂ (P1)2. In [Ol], Olsson shows that a fundamental set of solutions of E2 around the point (0, 1) in the case |x/(1− y)|< 1 or that around the point (0,∞) is given by Horn’s hypergeometric function H2 and Olsson’s hypergeometric function FP , while that around the point (0, 0) is given by F2. Moreover, he also derives some connection formulas related with F2, H2 and 2010 Mathematics Subject Classification: Primary 33C60; Secondary 33C65, 33C70.","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68557274","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: 1
PFAFFIAN SYSTEMS OF CONFLUENT HYPERGEOMETRIC FUNCTIONS OF TWO VARIABLES 两个变量的合流超几何函数的pfaffan系统
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2020-01-01 DOI: 10.2206/kyushujm.74.63
Shigeo Mukai
{"title":"PFAFFIAN SYSTEMS OF CONFLUENT HYPERGEOMETRIC FUNCTIONS OF TWO VARIABLES","authors":"Shigeo Mukai","doi":"10.2206/kyushujm.74.63","DOIUrl":"https://doi.org/10.2206/kyushujm.74.63","url":null,"abstract":"We study Pfaffian systems of confluent hypergeometric functions of two variables with rank three, by using rational twisted cohomology groups associated with Euler-type integral representations of them. We give bases of the cohomology groups, whose intersection matrices depend only on parameters. Each connection matrix of our Pfaffian systems admits a decomposition into five parts, each of which is the product of a constant matrix and a rational 1-form on the space of variables.","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68557556","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
INTEGRAL REPRESENTATIONS OF APPELL'S F2, F3, HORN'S H2 AND OLSSON'S FP FUNCTIONS appell的f2, f3, horn的h2和olsson的fp函数的积分表示
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2020-01-01 DOI: 10.2206/kyushujm.74.1
K. Mimachi
{"title":"INTEGRAL REPRESENTATIONS OF APPELL'S F2, F3, HORN'S H2 AND OLSSON'S FP FUNCTIONS","authors":"K. Mimachi","doi":"10.2206/kyushujm.74.1","DOIUrl":"https://doi.org/10.2206/kyushujm.74.1","url":null,"abstract":". We give integral representations of Euler type for Appell’s hypergeometric functions F 2 , F 3 , Horn’s hypergeometric function H 2 and Olsson’s hypergeometric function F P . Their integrands are the same (up to a constant factor), and only the regions of integration vary. Olsson Takayama ], and Koornwinder known that Appell’s hypergeometric function F 3 , Horn’s hypergeometric function H 2 and Olsson’s hypergeometric function P also appear as solutions of . Here Appell’s F 3 , Horn’s H 2 and Olsson’s F P are analytic","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68556993","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: 2
ON PROPER HOLOMORPHIC MAPPINGS BETWEEN TWO EQUIDIMENSIONAL FBH-TYPE DOMAINS 两个等维fbh型域间的真全纯映射
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2020-01-01 DOI: 10.2206/kyushujm.74.149
A. Kodama
{"title":"ON PROPER HOLOMORPHIC MAPPINGS BETWEEN TWO EQUIDIMENSIONAL FBH-TYPE DOMAINS","authors":"A. Kodama","doi":"10.2206/kyushujm.74.149","DOIUrl":"https://doi.org/10.2206/kyushujm.74.149","url":null,"abstract":"We introduce a new class of domains Dn,m(μ, p), called FBH-type domains, in Cn × Cm , where 0< μ ∈ R and p ∈ N. In the special case of p = 1, these domains are just the Fock–Bargmann–Hartogs domains Dn,m(μ) in Cn × Cm introduced by Yamamori. In this paper we obtain a complete description of an arbitrarily given proper holomorphic mapping between two equidimensional FBH-type domains. In particular, we prove that the holomorphic automorphism group Aut(Dn,m(μ, p)) of any FBH-type domain Dn,m(μ, p) with p 6= 1 is a Lie group isomorphic to the compact connected Lie group U (n)×U (m). This tells us that the structure of Aut(Dn,m(μ, p)) with p 6= 1 is essentially different from that of Aut(Dn,m(μ)).","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":"45 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68557211","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
ON EXTREMAL QUASI-MODULAR FORMS AFTER KANEKO AND KOIKE 在kaneko和koike之后的极值拟模形式
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2019-10-25 DOI: 10.2206/kyushujm.74.401
F. Pellarin, G. Nebe
{"title":"ON EXTREMAL QUASI-MODULAR FORMS AFTER KANEKO AND KOIKE","authors":"F. Pellarin, G. Nebe","doi":"10.2206/kyushujm.74.401","DOIUrl":"https://doi.org/10.2206/kyushujm.74.401","url":null,"abstract":"Kaneko and Koike introduced the notion of extremal quasi-modular form and proposed conjectures on their arithmetic properties. The aim of this note is to prove a rather sharp multiplicity estimate for these quasi-modular forms. The note ends with discussions and partial answers around these conjectures and an appendix by G. Nebe containing the proof of the integrality of the Fourier coefficients of the normalised extremal quasimodular form of weight 14 and depth 1.","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47812635","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
ON THE PARITY RESULT FOR MULTIPLE DIRICHLET SERIES 关于多重DIRICHLET级数的奇偶性结果
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2019-09-13 DOI: 10.2206/kyushujm.76.1
Shin-ya Kadota
{"title":"ON THE PARITY RESULT FOR MULTIPLE DIRICHLET SERIES","authors":"Shin-ya Kadota","doi":"10.2206/kyushujm.76.1","DOIUrl":"https://doi.org/10.2206/kyushujm.76.1","url":null,"abstract":"In this paper, we discuss the parity result for multiple Dirichlet series which contains some special values of multiple zeta functions as special cases, Mordell--Tornheim type of multiple zeta values, zeta values of the root systems and so on. Moreover, we can give explicit expression in terms of lower series by using main theorem.","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46420503","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
PRINCIPAL FACTORS AND LATTICE MINIMA IN CUBIC FIELDS 三次域中的主因子与格极小
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2019-07-22 DOI: 10.2206/kyushujm.76.101
S. Aouissi, A. Azizi, M. C. Ismaili, D. C. Mayer, M. Talbi
{"title":"PRINCIPAL FACTORS AND LATTICE MINIMA IN CUBIC FIELDS","authors":"S. Aouissi, A. Azizi, M. C. Ismaili, D. C. Mayer, M. Talbi","doi":"10.2206/kyushujm.76.101","DOIUrl":"https://doi.org/10.2206/kyushujm.76.101","url":null,"abstract":"Let $mathit{k}=mathbb{Q}(sqrt[3]{d},zeta_3)$, where $d>1$ is a cube-free positive integer, $mathit{k}_0=mathbb{Q}(zeta_3)$ be the cyclotomic field containing a primitive cube root of unity $zeta_3$, and $G=operatorname{Gal}(mathit{k}/mathit{k}_0)$. The possible prime factorizations of $d$ in our main result [2, Thm. 1.1] give rise to new phenomena concerning the chain $Theta=(theta_i)_{iinmathbb{Z}}$ of textit{lattice minima} in the underlying pure cubic subfield $L=mathbb{Q}(sqrt[3]{d})$ of $mathit{k}$. The aims of the present work are to give criteria for the occurrence of generators of primitive ambiguous principal ideals $(alpha)inmathcal{P}_{mathit{k}}^G/mathcal{P}_{mathit{k}_0}$ among the lattice minima $Theta=(theta_i)_{iinmathbb{Z}}$ of the underlying pure cubic field $L=mathbb{Q}(sqrt[3]{d})$, and to explain exceptional behavior of the chain $Theta$ for certain radicands $d$ with impact on determining the principal factorization type of $L$ and $mathit{k}$ by means of Voronoi's algorithm.","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47412242","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: 1
MULTIPLE ZETA VALUES AND ITERATED LOG-SINE INTEGRALS 多重ζ值与迭代LOG-SINE积分
IF 0.4 4区 数学
Kyushu Journal of Mathematics Pub Date : 2019-04-22 DOI: 10.2206/kyushujm.74.233
Ryo Umezawa
{"title":"MULTIPLE ZETA VALUES AND ITERATED LOG-SINE INTEGRALS","authors":"Ryo Umezawa","doi":"10.2206/kyushujm.74.233","DOIUrl":"https://doi.org/10.2206/kyushujm.74.233","url":null,"abstract":"We introduce an iterated integral version of (generalized) log-sine integrals (iterated log-sine integrals) and prove a relation between a multiple polylogarithm and iterated log-sine integrals. We also give a new method for obtaining relations among multiple zeta values, which uses iterated log-sine integrals, and give alternative proofs of several known results related to multiple zeta values and log-sine integrals.","PeriodicalId":49929,"journal":{"name":"Kyushu Journal of Mathematics","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47339766","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: 2
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