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Czechoslovak Mathematical Journal最新文献

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On the irreducible factors of a polynomial over a valued field 论有值域上多项式的不可还原因子
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-04-08 DOI: 10.21136/cmj.2024.0451-22
Anuj Jakhar
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引用次数: 0
On almost periodicity defined via non-absolutely convergent integrals 关于通过非绝对收敛积分定义的几乎周期性
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-04-02 DOI: 10.21136/cmj.2024.0014-23
Dariusz Bugajewski, Adam Nawrocki
{"title":"On almost periodicity defined via non-absolutely convergent integrals","authors":"Dariusz Bugajewski, Adam Nawrocki","doi":"10.21136/cmj.2024.0014-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0014-23","url":null,"abstract":". We investigate some properties of the normed space of almost periodic functions which are defined via the Denjoy-Perron (or equivalently, Henstock-Kurzweil) integral. In particular, we prove that this space is barrelled while it is not complete. We also prove that a linear differential equation with the non-homogenous term being an almost periodic function of such type, possesses a solution in the class under consideration.","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140753574","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
Positive periodic solutions to super-linear second-order ODEs 超线性二阶 ODE 的正周期解
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-03-28 DOI: 10.21136/cmj.2024.0128-23
Jiří Šremr
{"title":"Positive periodic solutions to super-linear second-order ODEs","authors":"Jiří Šremr","doi":"10.21136/cmj.2024.0128-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0128-23","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140373048","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
Stieltjes differential problems with general boundary value conditions. Existence and bounds of solutions 具有一般边界值条件的斯蒂尔杰斯微分问题。解的存在性和边界
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-03-22 DOI: 10.21136/cmj.2024.0125-23
V. Marraffa, B. Satco
{"title":"Stieltjes differential problems with general boundary value conditions. Existence and bounds of solutions","authors":"V. Marraffa, B. Satco","doi":"10.21136/cmj.2024.0125-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0125-23","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140213522","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
Characterization of shadowing for linear autonomous delay differential equations 线性自主延迟微分方程的阴影表征
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-03-20 DOI: 10.21136/cmj.2024.0191-23
M. Pituk, John Ioannis Stavroulakis
{"title":"Characterization of shadowing for linear autonomous delay differential equations","authors":"M. Pituk, John Ioannis Stavroulakis","doi":"10.21136/cmj.2024.0191-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0191-23","url":null,"abstract":". A well-known shadowing theorem for ordinary differential equations is generalized to delay differential equations. It is shown that a linear autonomous delay differential equation is shadowable if and only if its characteristic equation has no root on the imaginary axis. The proof is based on the decomposition theory of linear delay differential equations.","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140228034","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 the characterization of harmonic functions with initial data in Morrey space 论莫里空间初始数据谐函数的表征
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-03-18 DOI: 10.21136/cmj.2024.0368-23
Bo Li, Jinxia Li, Bolin Ma, Tianjun Shen
{"title":"On the characterization of harmonic functions with initial data in Morrey space","authors":"Bo Li, Jinxia Li, Bolin Ma, Tianjun Shen","doi":"10.21136/cmj.2024.0368-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0368-23","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140232616","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
Elementary construction of Hölder functions such that the Kurzweil-Stieltjes integral does not exist 不存在 Kurzweil-Stieltjes 积分的赫尔德函数的基本构造
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-03-15 DOI: 10.21136/cmj.2024.0296-23
Martin Rmoutil
{"title":"Elementary construction of Hölder functions such that the Kurzweil-Stieltjes integral\u0000 \u0000does not exist","authors":"Martin Rmoutil","doi":"10.21136/cmj.2024.0296-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0296-23","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140237880","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-differentiability of Feynman paths 费曼路径的不可分性
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-03-08 DOI: 10.21136/cmj.2024.0493-22
Pat Muldowney
{"title":"Non-differentiability of Feynman paths","authors":"Pat Muldowney","doi":"10.21136/cmj.2024.0493-22","DOIUrl":"https://doi.org/10.21136/cmj.2024.0493-22","url":null,"abstract":"<p>A well-known mathematical property of the particle paths of Brownian motion is that such paths are, with probability one, everywhere continuous and nowhere differentiable. R. Feynman (1965) and elsewhere asserted without proof that an analogous property holds for the sample paths (or possible paths) of a non-relativistic quantum mechanical particle to which a conservative force is applied. Using the non-absolute integration theory of Kurzweil and Henstock, this article provides an introductory proof of Feynman’s assertion.</p>","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886046","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
Ergodicity of increments of the Rosenblatt process and some consequences 罗森布拉特过程增量的遍历性及一些后果
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-03-07 DOI: 10.21136/cmj.2024.0252-23
Petr Čoupek, Pavel Kříž, Bohdan Maslowski
{"title":"Ergodicity of increments of the Rosenblatt process and some consequences","authors":"Petr Čoupek, Pavel Kříž, Bohdan Maslowski","doi":"10.21136/cmj.2024.0252-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0252-23","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140258190","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 the behaviour of the solutions of a $k$-order cyclic-type system of max difference equations 论 k$ 阶循环型最大差分方程系统解的行为
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2024-03-07 DOI: 10.21136/cmj.2024.0203-23
G. Stefanidou, G. Papaschinopoulos
{"title":"On the behaviour of the solutions of a $k$-order cyclic-type system of max difference equations","authors":"G. Stefanidou, G. Papaschinopoulos","doi":"10.21136/cmj.2024.0203-23","DOIUrl":"https://doi.org/10.21136/cmj.2024.0203-23","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140259225","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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