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Czechoslovak Mathematical Journal最新文献

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Commutative rings whose certain modules decompose into direct sums of cyclic submodules 某些模分解为循环子模的直和的交换环
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-06-21 DOI: 10.21136/cmj.2023.0392-22
Farid Kourki, R. Tribak
{"title":"Commutative rings whose certain modules decompose into direct sums of cyclic submodules","authors":"Farid Kourki, R. Tribak","doi":"10.21136/cmj.2023.0392-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0392-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45035089","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
Majority choosability of 1-planar digraph 平面有向图的大多数选择
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-06-21 DOI: 10.21136/CMJ.2023.0170-22
Weihao Xia, Jihui Wang, Jiansheng Cai
{"title":"Majority choosability of 1-planar digraph","authors":"Weihao Xia, Jihui Wang, Jiansheng Cai","doi":"10.21136/CMJ.2023.0170-22","DOIUrl":"https://doi.org/10.21136/CMJ.2023.0170-22","url":null,"abstract":"A majority coloring of a digraph D with k colors is an assignment π: V(D) → {1, 2, …, k} such that for every v ∈ V(D) we have π(w) = π(v) for at most half of all out-neighbors w ∈ N+(v). A digraph D is majority k-choosable if for any assignment of lists of colors of size k to the vertices, there is a majority coloring of D from these lists. We prove that if U(D) is a 1-planar graph without a 4-cycle, then D is majority 3-choosable. And we also prove that every NIC-planar digraph is majority 3-choosable.","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46311847","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
Equations for the set of overrings of normal rings and related ring extensions 正规环和相关环扩张的覆盖集的方程
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-06-20 DOI: 10.21136/CMJ.2023.0358-22
M. Ben Nasr, Ali Jaballah
{"title":"Equations for the set of overrings of normal rings and related ring extensions","authors":"M. Ben Nasr, Ali Jaballah","doi":"10.21136/CMJ.2023.0358-22","DOIUrl":"https://doi.org/10.21136/CMJ.2023.0358-22","url":null,"abstract":"We establish several finiteness characterizations and equations for the cardinality and the length of the set of overrings of rings with nontrivial zero divisors and integrally closed in their total ring of fractions. Similar properties are also obtained for related extensions of commutative rings that are not necessarily integral domains. Numerical characterizations are obtained for rings with some finiteness conditions afterwards.","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45689782","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
Tensor products of higher almost split sequences in subcategories 子范畴中高概分裂序列的张量乘积
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-06-19 DOI: 10.21136/cmj.2023.0432-22
Xiaojian Lu, Deren Luo
{"title":"Tensor products of higher almost split sequences in subcategories","authors":"Xiaojian Lu, Deren Luo","doi":"10.21136/cmj.2023.0432-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0432-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46022200","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
Convergence of ap-Henstock-Kurzweil integral on locally compact spaces 局部紧致空间上ap-Henstock-Kurzweil积分的收敛性
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-06-19 DOI: 10.21136/cmj.2023.0450-22
H. Kalita, R. Agarwal, B. Hazarika
{"title":"Convergence of ap-Henstock-Kurzweil integral on locally compact spaces","authors":"H. Kalita, R. Agarwal, B. Hazarika","doi":"10.21136/cmj.2023.0450-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0450-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46006453","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
Conditional Fourier-Feynman transform given infinite dimensional conditioning function on abstract Wiener space 抽象Wiener空间上给定无限维条件函数的条件傅立叶-费曼变换
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-06-12 DOI: 10.21136/CMJ.2023.0310-22
Jae Gil Choi, S. Shim
{"title":"Conditional Fourier-Feynman transform given infinite dimensional conditioning function on abstract Wiener space","authors":"Jae Gil Choi, S. Shim","doi":"10.21136/CMJ.2023.0310-22","DOIUrl":"https://doi.org/10.21136/CMJ.2023.0310-22","url":null,"abstract":"We study a conditional Fourier-Feynman transform (CFFT) of functionals on an abstract Wiener space (H, B, v). An infinite dimensional conditioning function is used to define the CFFT. To do this, we first present a short survey of the conditional Wiener integral concerning the topic of this paper. We then establish evaluation formulas for the conditional Wiener integral on the abstract Wiener space B. Using the evaluation formula, we next provide explicit formulas for CFFTs of functionals in the Kallianpur and Bromley Fresnel class ℱ(B) and we finally investigate some Fubini theorems involving CFFT.","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49180431","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
Finitely silting comodules in quasi-finite comodule category 拟有限模类中的有限淤积模
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-06-07 DOI: 10.21136/CMJ.2023.0173-22
Qianqian Yuan, Hailou Yao
{"title":"Finitely silting comodules in quasi-finite comodule category","authors":"Qianqian Yuan, Hailou Yao","doi":"10.21136/CMJ.2023.0173-22","DOIUrl":"https://doi.org/10.21136/CMJ.2023.0173-22","url":null,"abstract":"We introduce the notions of silting comodules and finitely silting comodules in quasi-finite category, and study some properties of them. We investigate the torsion pair and dualities which are related to finitely silting comodules, and give the equivalences among silting comodules, finitely silting comodules, tilting comodules and finitely tilting comodules.","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46075006","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
Sobolev type inequalities for fractional maximal functions and Riesz potentials in Morrey spaces of variable exponent on half spaces 半空间上变指数Morrey空间中分数极大函数的Sobolev型不等式和Riesz势
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-05-24 DOI: 10.21136/cmj.2023.0442-22
Y. Mizuta, T. Shimomura
{"title":"Sobolev type inequalities for fractional maximal functions and Riesz potentials in Morrey spaces of variable exponent on half spaces","authors":"Y. Mizuta, T. Shimomura","doi":"10.21136/cmj.2023.0442-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0442-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43468032","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 topology of the space of $mathcal{HK}$ integrable functions in ${mathbb R}^n$ ${mathbb R}^n$中$ mathbb {HK}$可积函数空间的拓扑
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-05-22 DOI: 10.21136/cmj.2023.0313-22
Varayu Boonpogkrong
{"title":"The topology of the space of $mathcal{HK}$ integrable functions in ${mathbb R}^n$","authors":"Varayu Boonpogkrong","doi":"10.21136/cmj.2023.0313-22","DOIUrl":"https://doi.org/10.21136/cmj.2023.0313-22","url":null,"abstract":"","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45077067","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
Annihilator ideals of finite dimensional simple modules of two-parameter quantized enveloping algebra Ur,s(sl2)documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{ 二参数量化包络代数Ur，s（sl2）documentclass[12pt]｛minimal｝usepackage｛amsmath｝usepackage｛wasysym｝ usepackage｛｛amsfonts｝usecpackage｛amssymb｝ucepackage｛amsbsy｝usepackage{mathrsfs｝usecpacket｛upgek｝setlength的有限维单模的湮灭理想{
IF 0.5 4区 数学
Czechoslovak Mathematical Journal Pub Date : 2023-05-22 DOI: 10.21136/CMJ.2023.0193-22
Yu Wang, Xiao-Meng Li
{"title":"Annihilator ideals of finite dimensional simple modules of two-parameter quantized enveloping algebra Ur,s(sl2)documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{","authors":"Yu Wang, Xiao-Meng Li","doi":"10.21136/CMJ.2023.0193-22","DOIUrl":"https://doi.org/10.21136/CMJ.2023.0193-22","url":null,"abstract":"Let U be the two-parameter quantized enveloping algebra Ur,s(sl2)documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$${U_{r,s}}({mathfrak{s}mathfrak{l}_2})$$end{document} and F(U) the locally finite subalgebra of U under the adjoint action. The aim of this paper is to determine some ring-theoretical properties of F(U) in the case when rs−1 is not a root of unity. Then we describe the annihilator ideals of finite dimensional simple modules of U by generators.","PeriodicalId":50596,"journal":{"name":"Czechoslovak Mathematical Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49635981","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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