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Czechoslovak Mathematical Journal最新文献

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Lie perfect, Lie central extension and generalization of nilpotency in multiplicative Lie algebras 乘法列阵中的列完备性、列中心扩展和零势的广义化
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-01-19 DOI: 10.21136/cmj.2024.0261-23
Dev Karan Singh, Mani Shankar Pandey, Shiv Datt Kumar
{"title":"Lie perfect, Lie central extension and generalization of nilpotency\u0000 \u0000in multiplicative Lie algebras","authors":"Dev Karan Singh, Mani Shankar Pandey, Shiv Datt Kumar","doi":"10.21136/cmj.2024.0261-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0261-23","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139612040","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 conjecture on minimum permanents 关于最小永久点的猜想
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-12-11 DOI: 10.21136/cmj.2023.0186-23
Gi-Sang Cheon, Seok-Zun Song
{"title":"A conjecture on minimum permanents","authors":"Gi-Sang Cheon, Seok-Zun Song","doi":"10.21136/cmj.2023.0186-23","DOIUrl":"https://doi.org/10.21136/cmj.2023.0186-23","url":null,"abstract":"<p>We consider the permanent function on the faces of the polytope of certain doubly stochastic matrices, whose nonzero entries coincide with those of fully indecomposable square (0, 1)-matrices containing the identity submatrix. We show that a conjecture in K. Pula, S. Z. Song, I. M. Wanless (2011), is true for some cases by determining the minimum permanent on some faces of the polytope of doubly stochastic matrices.</p>","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138630549","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
Boundary value problems with bounded ϕ-Laplacian and nonlocal conditions of integral type 有界拉普拉卡矩和积分型非局部条件的边值问题
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-12-08 DOI: 10.21136/cmj.2023.0154-23
Daria Bugajewska, Jean Mawhin
{"title":"Boundary value problems with bounded ϕ-Laplacian and nonlocal conditions of integral type","authors":"Daria Bugajewska, Jean Mawhin","doi":"10.21136/cmj.2023.0154-23","DOIUrl":"https://doi.org/10.21136/cmj.2023.0154-23","url":null,"abstract":"<p>We study the existence of solutions to nonlinear boundary value problems for second order quasilinear ordinary differential equations involving bounded <i>ϕ</i>-Laplacian, subject to integral boundary conditions formulated in terms of Riemann-Stieltjes integrals.</p>","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138632526","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 feebly nil-clean rings 关于微弱无净环
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-12-07 DOI: 10.21136/cmj.2023.0215-22
Marjan Sheibani Abdolyousefi, Neda Pouyan
{"title":"On feebly nil-clean rings","authors":"Marjan Sheibani Abdolyousefi, Neda Pouyan","doi":"10.21136/cmj.2023.0215-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0215-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138592840","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
Non-existence of global classical solutions to 1D compressible heat-conducting micropolar fluid 一维可压缩导热微极性流体全局经典解的不存在性
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-12-05 DOI: 10.21136/cmj.2023.0196-22
Jianwei Dong, Jun-hui Zhu, Litao Zhang
{"title":"Non-existence of global classical solutions to 1D compressible heat-conducting\u0000 \u0000micropolar fluid","authors":"Jianwei Dong, Jun-hui Zhu, Litao Zhang","doi":"10.21136/cmj.2023.0196-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0196-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138600772","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
Global classical solutions in a self-consistent chemotaxis(-Navier)-Stokes system 自洽化学趋向（-纳维尔）-斯托克斯系统中的全局经典解
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-12-04 DOI: 10.21136/cmj.2023.0570-22
Yanjiang Li, Zhongqing Yu, Yumei Huang
{"title":"Global classical solutions in a self-consistent chemotaxis(-Navier)-Stokes system","authors":"Yanjiang Li, Zhongqing Yu, Yumei Huang","doi":"10.21136/cmj.2023.0570-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0570-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138601844","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
The origin and developments of Kurzweil's generalized Riemann integral 库兹韦尔广义黎曼积分的起源与发展
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-12-04 DOI: 10.21136/cmj.2023.0196-23
Jean Mawhin
{"title":"The origin and developments of Kurzweil's generalized Riemann integral","authors":"Jean Mawhin","doi":"10.21136/cmj.2023.0196-23","DOIUrl":"https://doi.org/10.21136/cmj.2023.0196-23","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138602141","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
Two results of n-exangulated categories n-exangulated categories 的两个结果
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-11-29 DOI: 10.21136/cmj.2023.0042-23
Jian He, Jing He, Panyue Zhou
{"title":"Two results of n-exangulated categories","authors":"Jian He, Jing He, Panyue Zhou","doi":"10.21136/cmj.2023.0042-23","DOIUrl":"https://doi.org/10.21136/cmj.2023.0042-23","url":null,"abstract":"<p>M. Herschend, Y. Liu, H. Nakaoka introduced <i>n</i>-exangulated categories, which are a simultaneous generalization of <i>n</i>-exact categories and (<i>n</i> + 2)-angulated categories. This paper consists of two results on <i>n</i>-exangulated categories: (1) we give an equivalent characterization of axiom (EA2); (2) we provide a new way to construct a closed subfunctor of an <i>n</i>-exangulated category.</p>","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140129684","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
Polyanalytic Besov spaces and approximation by dilatations 多解析贝索夫空间和扩张近似
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-11-29 DOI: 10.21136/cmj.2023.0347-23
Ali Abkar
{"title":"Polyanalytic Besov spaces and approximation by dilatations","authors":"Ali Abkar","doi":"10.21136/cmj.2023.0347-23","DOIUrl":"https://doi.org/10.21136/cmj.2023.0347-23","url":null,"abstract":"<p>Using partial derivatives <i>∂f</i>/<i>∂z</i> and <span>(partial f/partialbar{z})</span>, we introduce Besov spaces of polyanalytic functions in the open unit disk, as well as in the upper half-plane. We then prove that the dilatations of functions in certain weighted polyanalytic Besov spaces converge to the same functions in norm. When restricted to the open unit disk, we prove that each polyanalytic function of degree <i>q</i> can be approximated in norm by polyanalytic polynomials of degree at most <i>q</i>.</p>","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140125972","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
Hall algebras of two equivalent extriangulated categories 两个等效外延范畴的霍尔代数
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-11-29 DOI: 10.21136/cmj.2023.0344-22
Shiquan Ruan, Li Wang, Haicheng Zhang
{"title":"Hall algebras of two equivalent extriangulated categories","authors":"Shiquan Ruan, Li Wang, Haicheng Zhang","doi":"10.21136/cmj.2023.0344-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0344-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139213462","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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