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Two new algebraic structures more general than weak rings 比弱环更通用的两种新代数结构
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-09-02 DOI: 10.2989/16073606.2024.2392242
Teng Zhang
{"title":"Two new algebraic structures more general than weak rings","authors":"Teng Zhang","doi":"10.2989/16073606.2024.2392242","DOIUrl":"https://doi.org/10.2989/16073606.2024.2392242","url":null,"abstract":"In 1994, Bergelson and Hindman established a remarkable result for IP* sets: for any IP* set A and any sequence l in ℕ, there exists a sum subsystem l′ of l such that all finite sums and finite pro...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184106","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
Local complementation in Banach spaces and its preservation under free constructions 巴拿赫空间中的局部互补及其在自由构造下的保持
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-09-02 DOI: 10.2989/16073606.2024.2393682
Antonio Avilés, Gonzalo Martínez-Cervantes, Abraham Rueda Zoca
{"title":"Local complementation in Banach spaces and its preservation under free constructions","authors":"Antonio Avilés, Gonzalo Martínez-Cervantes, Abraham Rueda Zoca","doi":"10.2989/16073606.2024.2393682","DOIUrl":"https://doi.org/10.2989/16073606.2024.2393682","url":null,"abstract":"In this work we consider natural generalizations of local complementation in Banach spaces, which include Lipschitz-local complementation. We show that all these notions are indeed equivalent to th...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184105","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 p-k-convex solutions for the p-k-Hessian system with the gradient term 关于带梯度项的 p-k-Hessian 系统的 p-k-convex 解
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-08-05 DOI: 10.2989/16073606.2024.2381557
Zhanbing Bai, Zedong Yang
{"title":"On p-k-convex solutions for the p-k-Hessian system with the gradient term","authors":"Zhanbing Bai, Zedong Yang","doi":"10.2989/16073606.2024.2381557","DOIUrl":"https://doi.org/10.2989/16073606.2024.2381557","url":null,"abstract":"In this paper, we consider a class of nonlinear p-k-Hessian systems with the gradient termwhere γ > 0, p > 1, and 1 ≤ k ≤ N is an integer. We show some existence, boundedness and blow-up results of...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947870","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 remarks on the projective properties of Menger and Hurewicz 关于门格尔和胡勒维奇的投影特性的一些评论
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-08-02 DOI: 10.2989/16073606.2024.2380499
Mikołaj Krupski, Kacper Kucharski
{"title":"Some remarks on the projective properties of Menger and Hurewicz","authors":"Mikołaj Krupski, Kacper Kucharski","doi":"10.2989/16073606.2024.2380499","DOIUrl":"https://doi.org/10.2989/16073606.2024.2380499","url":null,"abstract":"It is known that both the Menger and Hurewicz property of a Tychonoff space X can be described by the way X is placed in its Čech-Stone compactification βX. We provide analogous characterizations f...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947869","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 positive solutions of the Cauchy problem for doubly nonlocal equations 论双非局部方程考希问题的正解
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-08-02 DOI: 10.2989/16073606.2024.2364302
Sanping Rao, Chunxiao Yang, Jinge Yang
{"title":"On positive solutions of the Cauchy problem for doubly nonlocal equations","authors":"Sanping Rao, Chunxiao Yang, Jinge Yang","doi":"10.2989/16073606.2024.2364302","DOIUrl":"https://doi.org/10.2989/16073606.2024.2364302","url":null,"abstract":"We study the Cauchy problem for the doubly nonlocal equationwhere and for some m ∈ ℝ and 0 < α ≤ +∞, here α = +∞ means that J is compactly supported. The problem not only describes nonlocal diffu...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947868","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
Well-posedness result for the flow of Maxwell viscoelastic fluid of White-Metzner type White-Metzner 型麦克斯韦粘弹性流体流动的解析结果
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-08-01 DOI: 10.2989/16073606.2024.2381568
Djohra Dekhil, Toufik Laadj, Khaled M’hamed-messaoud
{"title":"Well-posedness result for the flow of Maxwell viscoelastic fluid of White-Metzner type","authors":"Djohra Dekhil, Toufik Laadj, Khaled M’hamed-messaoud","doi":"10.2989/16073606.2024.2381568","DOIUrl":"https://doi.org/10.2989/16073606.2024.2381568","url":null,"abstract":"In this paper, we investigate the flow characteristics of an unsteady quasistatic Maxwell viscoelastic fluid of White-Metzner type within a three-dimensional bounded domain. Our objective is to est...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947879","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 study of a Kirchhoff-type p(x)-triharmonic problem involving two parameters 涉及两个参数的基尔霍夫型 p(x)-triharmonic 问题研究
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-07-31 DOI: 10.2989/16073606.2024.2380503
Xiumei Han, Zohreh Naghizadeh, Binlin Zhang
{"title":"A study of a Kirchhoff-type p(x)-triharmonic problem involving two parameters","authors":"Xiumei Han, Zohreh Naghizadeh, Binlin Zhang","doi":"10.2989/16073606.2024.2380503","DOIUrl":"https://doi.org/10.2989/16073606.2024.2380503","url":null,"abstract":"Our most significant aim is to guarantee multiplicity results for a Kirchhoff-type problem involving two parameters and p(x)-triharmonic operator subject to the Navier boundary condition. More prec...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947877","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
Concentration and cavitation in the Riemann solution for the relativistic Euler equations with non-ideal isothermal dusty gas 带有非理想等温尘埃气体的相对论欧拉方程黎曼解中的浓度和气穴现象
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-07-31 DOI: 10.2989/16073606.2024.2381552
Bencui Shan, Yanyan Zhang, Yu Zhang
{"title":"Concentration and cavitation in the Riemann solution for the relativistic Euler equations with non-ideal isothermal dusty gas","authors":"Bencui Shan, Yanyan Zhang, Yu Zhang","doi":"10.2989/16073606.2024.2381552","DOIUrl":"https://doi.org/10.2989/16073606.2024.2381552","url":null,"abstract":"The phenomena of concentration and cavitation in the Riemann solutions of the relativistic Euler equations with non-ideal isothermal dusty gas are considered. The Riemann problem is solved first, a...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947876","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
Sophie Germain prime p and the permutation of product of first p cycles 索菲-日耳曼素数 p 和前 p 个循环的排列积
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-07-31 DOI: 10.2989/16073606.2024.2374787
M. Makeshwari, V.P. Ramesh, R. Thangadurai
{"title":"Sophie Germain prime p and the permutation of product of first p cycles","authors":"M. Makeshwari, V.P. Ramesh, R. Thangadurai","doi":"10.2989/16073606.2024.2374787","DOIUrl":"https://doi.org/10.2989/16073606.2024.2374787","url":null,"abstract":"For a natural number n, the permutation (n!) is defined as the left-to-right product of the first n cycles, namely, . In this article, we prove that for any natural number n, 2 is a primitive root ...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947872","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 (B, C)-Core inverse of rectangular matrices 矩形矩阵的（B，C）核心逆变换
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-07-31 DOI: 10.2989/16073606.2024.2374776
Huihui Zhu, Daihan Xu, Pedro Patrício, Dijana Mosić
{"title":"The (B, C)-Core inverse of rectangular matrices","authors":"Huihui Zhu, Daihan Xu, Pedro Patrício, Dijana Mosić","doi":"10.2989/16073606.2024.2374776","DOIUrl":"https://doi.org/10.2989/16073606.2024.2374776","url":null,"abstract":"Let A be an m × n complex matrix and let B, C be n × m complex matrices. The main purpose of this article is to derive several new properties of the (B, C)-core inverse. Also, we introduce and inve...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947873","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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