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Converse of Fuglede Theorem Fuglede定理的逆
4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-46
Hranislav Stanković
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引用次数: 0
Spectral representation of absolutely minimum attaining unbounded normal operators 获得无界正规算子的绝对最小值的谱表示
4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-43
S. H. Kulkarni, G. Ramesh
{"title":"Spectral representation of absolutely minimum attaining unbounded normal operators","authors":"S. H. Kulkarni, G. Ramesh","doi":"10.7153/oam-2023-17-43","DOIUrl":"https://doi.org/10.7153/oam-2023-17-43","url":null,"abstract":"","PeriodicalId":56274,"journal":{"name":"Operators and Matrices","volume":"53 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":"136373480","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
Absolute matrix order ideals in absolute matrix order unit spaces 绝对矩阵序单位空间中的绝对矩阵序理想
4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-49
Amit Kumar
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引用次数: 0
Isolation amongst composition operators on $L^p(mu)$-spaces $(1le p le infty)$ $L^p(mu)$ -空间上组合运算符之间的隔离 $(1le p le infty)$
IF 0.5 4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-13
Ashish Naudiyal, H. Chandra
{"title":"Isolation amongst composition operators on $L^p(mu)$-spaces $(1le p le infty)$","authors":"Ashish Naudiyal, H. Chandra","doi":"10.7153/oam-2023-17-13","DOIUrl":"https://doi.org/10.7153/oam-2023-17-13","url":null,"abstract":". In this paper we show that each composition operator is isolated in comp ( L p ) ( 1 (cid:2) p (cid:2) ∞ ) under the norm topology. We also prove that while each composition operator is non-isolated in comp ( (cid:2) p ) ( 1 (cid:2) p < ∞ ) under the strong operator topology, every composition operator is isolated in comp ( L ∞ ) under the strong operator topology.","PeriodicalId":56274,"journal":{"name":"Operators and Matrices","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71224531","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
Analyticity and stability of semigroup related to an abstract initial-boundary value problem 一类抽象初边值问题半群的解析性与稳定性
IF 0.5 4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-36
Jingting Xu, Jun ie Huang, Alatancang Chen
{"title":"Analyticity and stability of semigroup related to an abstract initial-boundary value problem","authors":"Jingting Xu, Jun ie Huang, Alatancang Chen","doi":"10.7153/oam-2023-17-36","DOIUrl":"https://doi.org/10.7153/oam-2023-17-36","url":null,"abstract":"","PeriodicalId":56274,"journal":{"name":"Operators and Matrices","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71225198","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
Some refinements of real power form inequalities for (p,h)-convex functions via weak sub-majorization 对(p,h)-凸函数的实幂不等式进行了一些改进
4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-52
Mohamed Amine Ighachane, Mohammed Bouchangour, Zakaria Taki
{"title":"Some refinements of real power form inequalities for (p,h)-convex functions via weak sub-majorization","authors":"Mohamed Amine Ighachane, Mohammed Bouchangour, Zakaria Taki","doi":"10.7153/oam-2023-17-52","DOIUrl":"https://doi.org/10.7153/oam-2023-17-52","url":null,"abstract":"","PeriodicalId":56274,"journal":{"name":"Operators and Matrices","volume":"19 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":"136372934","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
Invertible elements and commutativity in Banach algebras Banach代数中的可逆元与交换性
4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-38
Cheikh Ould Hamoud
{"title":"Invertible elements and commutativity in Banach algebras","authors":"Cheikh Ould Hamoud","doi":"10.7153/oam-2023-17-38","DOIUrl":"https://doi.org/10.7153/oam-2023-17-38","url":null,"abstract":"","PeriodicalId":56274,"journal":{"name":"Operators and Matrices","volume":"23 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":"136372950","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 weaving frames in Hilbert spaces 希尔伯特空间中的织造框架
4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-53
Dong ei Li, Jing Jiang, Yuxi ng Xu
{"title":"On weaving frames in Hilbert spaces","authors":"Dong ei Li, Jing Jiang, Yuxi ng Xu","doi":"10.7153/oam-2023-17-53","DOIUrl":"https://doi.org/10.7153/oam-2023-17-53","url":null,"abstract":"","PeriodicalId":56274,"journal":{"name":"Operators and Matrices","volume":"17 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":"136373431","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 generalization of Kleinecke-Shirokov theorem for matrices 矩阵Kleinecke-Shirokov定理的推广
IF 0.5 4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-04
E. Kramar, Marjeta Kramar Fijavž
{"title":"A generalization of Kleinecke-Shirokov theorem for matrices","authors":"E. Kramar, Marjeta Kramar Fijavž","doi":"10.7153/oam-2023-17-04","DOIUrl":"https://doi.org/10.7153/oam-2023-17-04","url":null,"abstract":". For given square matrices A and B we denote by Y = AB − BA and by Z = AY − YA . It is well known that if A and Y commute, i","PeriodicalId":56274,"journal":{"name":"Operators and Matrices","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71224206","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
Computing the S-numerical ranges of differential operators 计算微分算子的s数值范围
4区 数学
Operators and Matrices Pub Date : 2023-01-01 DOI: 10.7153/oam-2023-17-39
Ahmed Muhammad, Berivan Azeez, Fatemeh E. Taheri
{"title":"Computing the S-numerical ranges of differential operators","authors":"Ahmed Muhammad, Berivan Azeez, Fatemeh E. Taheri","doi":"10.7153/oam-2023-17-39","DOIUrl":"https://doi.org/10.7153/oam-2023-17-39","url":null,"abstract":"","PeriodicalId":56274,"journal":{"name":"Operators and Matrices","volume":"8 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":"136373506","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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