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Colloquium Mathematicum最新文献

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On the differentiation of random measures with respect to homothecy invariant convex bases 关于齐次不变凸基的随机测度的微分
IF 0.4 4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm9028-2-2023
K. Chubinidze, G. Oniani
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引用次数: 0
Filament local product structures in homogeneous continua 均匀连续体中的长丝局部产物结构
IF 0.4 4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm8629-3-2023
J. Prajs
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引用次数: 0
On the closedness of the sum of subspacesof the space $B(H,Y)$ consisting of operators whose kernels contain given subspaces of $H$ 由算子组成的空间$B(H,Y)$的子空间和的封闭性，这些算子的核包含$H$的给定子空间
IF 0.4 4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm8719-12-2022
I. Feshchenko
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引用次数: 0
Even partition functions and $2$-adic analysis 偶配分函数和$2$进元分析
IF 0.4 4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm9000-2-2023
N. Baccar, J. Nicolas
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引用次数: 0
Integers of a quadratic field with prescribed sum and product 有规定的和和积的二次域的整数
IF 0.4 4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm9023-11-2022
A. Bremner, G. Soydan
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引用次数: 0
On sets intersecting every square of the plane 在与平面的每个正方形相交的集合上
4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm9159-8-2023
Michael Hrušák, Cristina Villanueva-Segovia
{"title":"On sets intersecting every square of the plane","authors":"Michael Hrušák, Cristina Villanueva-Segovia","doi":"10.4064/cm9159-8-2023","DOIUrl":"https://doi.org/10.4064/cm9159-8-2023","url":null,"abstract":"We analyse properties of sets that contain at least one vertex of each square of the plane, in particular we study minimal elements (with respect to the subset relation) of the family $mathcal A$ of sets with this property. We prove that minimal elements","PeriodicalId":49216,"journal":{"name":"Colloquium Mathematicum","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135053876","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
A variant of some cyclotomic matrices involving trinomial coefficients 一些包含三项式系数的分环矩阵的变体
4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm9115-6-2023
Yu-Bo Li, Ning-Liu Wei
{"title":"A variant of some cyclotomic matrices involving trinomial coefficients","authors":"Yu-Bo Li, Ning-Liu Wei","doi":"10.4064/cm9115-6-2023","DOIUrl":"https://doi.org/10.4064/cm9115-6-2023","url":null,"abstract":"By using the theory of circulant matrices we study some matrices over finite fields which involve the quadratic character and trinomial coefficients.","PeriodicalId":49216,"journal":{"name":"Colloquium Mathematicum","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135440779","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
Amenability constants of central Fourier algebras of finite groups 有限群中心傅里叶代数的可调和常数
4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm9018-9-2023
John Sawatzky
{"title":"Amenability constants of central Fourier algebras of finite groups","authors":"John Sawatzky","doi":"10.4064/cm9018-9-2023","DOIUrl":"https://doi.org/10.4064/cm9018-9-2023","url":null,"abstract":"We consider amenability constants of the central Fourier algebra $ZA(G)$ of a finite group $G$. This is a dual object to $ZL^1(G)$ in the sense of hypergroup algebras, and as such shares similar amenability theory. We provide several classes of groups whe","PeriodicalId":49216,"journal":{"name":"Colloquium Mathematicum","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135446669","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
A factorization of metric spaces 度量空间的分解
4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm9066-6-2023
Yoshito Ishiki
{"title":"A factorization of metric spaces","authors":"Yoshito Ishiki","doi":"10.4064/cm9066-6-2023","DOIUrl":"https://doi.org/10.4064/cm9066-6-2023","url":null,"abstract":"We first prove that for every metrizable space $X$, for every closed subset $Fhphantom{i}$ whose complement is zero-dimensional, the space $X$ can be embedded as a closed subset into a product of the closed subset $F$ and a metrizable zero-dimensional sp","PeriodicalId":49216,"journal":{"name":"Colloquium Mathematicum","volume":"86 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136202895","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 pinching characterization of compact shrinking Ricci solitons 紧缩Ricci孤子的积分捏化特性
IF 0.4 4区 数学
Colloquium Mathematicum Pub Date : 2023-01-01 DOI: 10.4064/cm8778-1-2023
Y. Chu, Rui Huang, Jundong Zhou
{"title":"Integral pinching characterization of compact shrinking Ricci solitons","authors":"Y. Chu, Rui Huang, Jundong Zhou","doi":"10.4064/cm8778-1-2023","DOIUrl":"https://doi.org/10.4064/cm8778-1-2023","url":null,"abstract":"","PeriodicalId":49216,"journal":{"name":"Colloquium Mathematicum","volume":"26 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70143160","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
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