Portugaliae Mathematica最新文献

筛选
英文 中文
Existence of solutions for critical Klein–Gordon equations coupled with Born–Infeld theory in higher dimensions 临界克莱因-戈登方程与高维度玻恩-因费尔德理论耦合解的存在性
IF 0.8 4区 数学
Portugaliae Mathematica Pub Date : 2024-01-04 DOI: 10.4171/pm/2116
Zhenyu Guo, Xueqian Yan
{"title":"Existence of solutions for critical Klein–Gordon equations coupled with Born–Infeld theory in higher dimensions","authors":"Zhenyu Guo, Xueqian Yan","doi":"10.4171/pm/2116","DOIUrl":"https://doi.org/10.4171/pm/2116","url":null,"abstract":"","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":"52 14","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139384598","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
Null controllability and Stackelberg–Nash strategy for a $2times 2$ system of parabolic equations $2 * 2$抛物型方程组的零可控性和Stackelberg-Nash策略
4区 数学
Portugaliae Mathematica Pub Date : 2023-10-23 DOI: 10.4171/pm/2111
Islanita C. A. Albuquerque, Maurício C. Santos
{"title":"Null controllability and Stackelberg–Nash strategy for a $2times 2$ system of parabolic equations","authors":"Islanita C. A. Albuquerque, Maurício C. Santos","doi":"10.4171/pm/2111","DOIUrl":"https://doi.org/10.4171/pm/2111","url":null,"abstract":"","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":"24 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135366508","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
Rank-one ECS manifolds of dilational type 一级膨胀型ECS流形
4区 数学
Portugaliae Mathematica Pub Date : 2023-10-23 DOI: 10.4171/pm/2110
Andrzej Derdzinski, Ivo Terek
{"title":"Rank-one ECS manifolds of dilational type","authors":"Andrzej Derdzinski, Ivo Terek","doi":"10.4171/pm/2110","DOIUrl":"https://doi.org/10.4171/pm/2110","url":null,"abstract":"We study ECS manifolds, that is, pseudo-Riemannian manifolds with parallel Weyl tensor which are neither conformally flat nor locally symmetric. Every ECS manifold has rank 1 or 2, the rank being the dimension of a distinguished null parallel distribution discovered by Olszak, and a rank-one ECS manifold may be called translational or dilational, depending on whether the holonomy group of a natural flat connection in the Olszak distribution is finite or infinite. Some such manifolds are in a natural sense generic, which refers to the algebraic structure of the Weyl tensor. Known examples of compact ECS manifolds, in every dimension greater than 4, are all of rank 1 and translational, some of them generic, none of them locally homogeneous. As we show, generic compact rank-one ECS manifolds must be translational or locally homogeneous, provided that they arise as isometric quotients of a specific class of explicitly constructed\"model\"manifolds. This result is relevant since the clause starting with\"provided that\"may be dropped: according to a theorem which we prove in a forthcoming paper, the models just mentioned include the isometry types of the pseudo-Riemannian universal coverings of all generic compact rank-one ECS manifolds.","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":"30 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135323066","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: 4
A reverse Ozawa–Rogers estimate 相反的小泽-罗杰斯估计
IF 0.8 4区 数学
Portugaliae Mathematica Pub Date : 2023-07-12 DOI: 10.4171/pm/2108
Yi C. Huang
{"title":"A reverse Ozawa–Rogers estimate","authors":"Yi C. Huang","doi":"10.4171/pm/2108","DOIUrl":"https://doi.org/10.4171/pm/2108","url":null,"abstract":"","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44093620","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 generalized Wilf conjectures 关于广义威尔弗猜想
IF 0.8 4区 数学
Portugaliae Mathematica Pub Date : 2023-06-08 DOI: 10.4171/pm/2112
M. Can, Naufil Sakran
{"title":"On generalized Wilf conjectures","authors":"M. Can, Naufil Sakran","doi":"10.4171/pm/2112","DOIUrl":"https://doi.org/10.4171/pm/2112","url":null,"abstract":"We investigate complement-finite submonoids of the monoid of nonnegative integer points of a unipotent linear algebraic group $G$. These monoids are in general noncommutative but they specialize to the generalized numerical monoids of Cistco et al. We show that every unipotent numerical monoid has a unique finite minimal generating set. We propose a generalization of the Wilf conjecture in our setting. We contrast our Wilf conjecture against the Generalized Wilf Conjecture. Then we isolate two new families of unipotent numerical monoids called the {em thick} and the {em thin} unipotent numerical monoids. We prove that our Wilf conjecture holds for every thick (commutative) unipotent numerical monoid. Under additional assumptions on the conductors, we prove that our Wilf conjecture holds for every thin (commutative) unipotent numerical monoid.","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":"27 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139370556","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
Normal bundle of monomial curves: an application to rational curves 单项式曲线的正规束:在有理曲线上的应用
IF 0.8 4区 数学
Portugaliae Mathematica Pub Date : 2023-06-07 DOI: 10.4171/pm/2104
A. Alzati, Raquel Mallavibarrena
{"title":"Normal bundle of monomial curves: an application to rational curves","authors":"A. Alzati, Raquel Mallavibarrena","doi":"10.4171/pm/2104","DOIUrl":"https://doi.org/10.4171/pm/2104","url":null,"abstract":". In this note we give an application to the study of very general rational curves in P s ( C ) of the calculation of the splitting type of the normal bundle of any smooth monomial rational curve (i.e. embedded by monomial functions).","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45537695","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 split extensions of preordered groups 关于预定群的分裂扩展
IF 0.8 4区 数学
Portugaliae Mathematica Pub Date : 2023-05-17 DOI: 10.4171/pm/2101
M. M. Clementino, Carla Ruivo
{"title":"On split extensions of preordered groups","authors":"M. M. Clementino, Carla Ruivo","doi":"10.4171/pm/2101","DOIUrl":"https://doi.org/10.4171/pm/2101","url":null,"abstract":"","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49257930","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
Theoretical analysis of a discrete population balance model with sum kernel 具有和核的离散种群平衡模型的理论分析
IF 0.8 4区 数学
Portugaliae Mathematica Pub Date : 2023-05-17 DOI: 10.4171/pm/2103
Sonali Kaushik, Rajesh Kumar, F. D. da Costa
{"title":"Theoretical analysis of a discrete population balance model with sum kernel","authors":"Sonali Kaushik, Rajesh Kumar, F. D. da Costa","doi":"10.4171/pm/2103","DOIUrl":"https://doi.org/10.4171/pm/2103","url":null,"abstract":"","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42582216","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
Monotone extremal functions and the weighted Hilbert’s inequality 单调极值函数与加权希尔伯特不等式
IF 0.8 4区 数学
Portugaliae Mathematica Pub Date : 2023-02-28 DOI: 10.4171/pm/2109
E. Carneiro, Friedrich Littmann
{"title":"Monotone extremal functions and the weighted Hilbert’s inequality","authors":"E. Carneiro, Friedrich Littmann","doi":"10.4171/pm/2109","DOIUrl":"https://doi.org/10.4171/pm/2109","url":null,"abstract":"In this note we find optimal one-sided majorants of exponential type for the signum function subject to certain monotonicity conditions. As an application, we use these special functions to obtain a simple Fourier analysis proof of the (non-sharp) weighted Hilbert-Montgomery-Vaughan inequality.","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45704920","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
Hardwiring truth in functional interpretations 在函数解释中建立真理
IF 0.8 4区 数学
Portugaliae Mathematica Pub Date : 2023-02-10 DOI: 10.4171/pm/2094
Bruno Miguel Antunes Dinis, Jaime Gaspar
{"title":"Hardwiring truth in functional interpretations","authors":"Bruno Miguel Antunes Dinis, Jaime Gaspar","doi":"10.4171/pm/2094","DOIUrl":"https://doi.org/10.4171/pm/2094","url":null,"abstract":"","PeriodicalId":51269,"journal":{"name":"Portugaliae Mathematica","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41771181","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信