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Exponential stability results for second-order impulsive neutral stochastic differential equations 二阶脉冲中性随机微分方程的指数稳定性结果
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-22 DOI: 10.2989/16073606.2024.2329810
Dongdong Gao, Daipeng Kuang, Jianli Li
{"title":"Exponential stability results for second-order impulsive neutral stochastic differential equations","authors":"Dongdong Gao, Daipeng Kuang, Jianli Li","doi":"10.2989/16073606.2024.2329810","DOIUrl":"https://doi.org/10.2989/16073606.2024.2329810","url":null,"abstract":"This paper is aimed to discuss the existence and exponential stability of mild solutions for second-order impulsive neutral stochastic differential equations (INSDEs). Firstly, we derive the existe...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"71 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140197846","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
Multiplicity of solutions for variable-order fractional Kirchhoff problem with singular term 带奇异项的变阶分数基尔霍夫问题解的多重性
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-22 DOI: 10.2989/16073606.2024.2329338
R. Chammem, A. Sahbani, A. Saidani
{"title":"Multiplicity of solutions for variable-order fractional Kirchhoff problem with singular term","authors":"R. Chammem, A. Sahbani, A. Saidani","doi":"10.2989/16073606.2024.2329338","DOIUrl":"https://doi.org/10.2989/16073606.2024.2329338","url":null,"abstract":"In this paper, we consider a class of singular variable-order fractional Kirchhoff problem of the form:where is a bounded domain, is the variable-order fractional Laplacian operator, [u]s(·) is t...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140197838","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
Conformally related invariant (α, β)-metrics on homogeneous spaces 同质空间上的共形相关不变（α，β）度量
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-22 DOI: 10.2989/16073606.2024.2328352
Azar Fatahi, Masoumeh Hosseini, Hamid Reza Salimi Moghaddam
{"title":"Conformally related invariant (α, β)-metrics on homogeneous spaces","authors":"Azar Fatahi, Masoumeh Hosseini, Hamid Reza Salimi Moghaddam","doi":"10.2989/16073606.2024.2328352","DOIUrl":"https://doi.org/10.2989/16073606.2024.2328352","url":null,"abstract":"In this paper, we give the flag curvature formula of general (α, β)-metrics of Berwald type. We study conformally related (α, β)-metrics, especially general (α, β)-metrics that are conformally rela...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"28 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140198062","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 uniquely packable trees 关于独特的可包装树木
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-21 DOI: 10.2989/16073606.2024.2321259
A. Alochukwu, M. Dorfling, E. Jonck
{"title":"On uniquely packable trees","authors":"A. Alochukwu, M. Dorfling, E. Jonck","doi":"10.2989/16073606.2024.2321259","DOIUrl":"https://doi.org/10.2989/16073606.2024.2321259","url":null,"abstract":"An i-packing in a graph G is a set of vertices that are pairwise at distance more than i. A packing colouring of G is a partition X = {X1, X2, . . . , Xk } of V(G) such that each colour class Xi is...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"132 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140197848","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 proper homotopy of Alexandroff spaces 亚历山大罗夫空间的适当同调
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-21 DOI: 10.2989/16073606.2024.2323159
Tomás Fernández-Bayort, Álvaro Luque, Antonio Quintero
{"title":"The proper homotopy of Alexandroff spaces","authors":"Tomás Fernández-Bayort, Álvaro Luque, Antonio Quintero","doi":"10.2989/16073606.2024.2323159","DOIUrl":"https://doi.org/10.2989/16073606.2024.2323159","url":null,"abstract":"This paper introduces the study of the infinity in the class of Alexandroff spaces by establishing the proper category of locally finite Alexandroff spaces. We observe that the McCord and Clader th...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"58 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140197825","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 rigid Riesz space 刚性里兹空间
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-07 DOI: 10.2989/16073606.2023.2287848
A.W. Wickstead
{"title":"A rigid Riesz space","authors":"A.W. Wickstead","doi":"10.2989/16073606.2023.2287848","DOIUrl":"https://doi.org/10.2989/16073606.2023.2287848","url":null,"abstract":"We give an example of an Archimedean Riesz space on which every automorphism is a strictly positive multiple of the identity.","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"30 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140107109","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 a special Kapteyn series 卡普汀特别系列
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-07 DOI: 10.2989/16073606.2023.2287841
A.J.E.M. Janssen
{"title":"On a special Kapteyn series","authors":"A.J.E.M. Janssen","doi":"10.2989/16073606.2023.2287841","DOIUrl":"https://doi.org/10.2989/16073606.2023.2287841","url":null,"abstract":"We investigate the mathematical properties of the function , ϵ ∈ [−1, 1], which is a special Kapteyn series of the first kind. Unlike various other special Kapteyn series, the function T (ϵ) does n...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"39 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140117609","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 order bidual of C(X) for a realcompact space 实紧密空间 C(X) 的阶双偶
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-07 DOI: 10.2989/16073606.2023.2287816
Marcel de Jeu, Jan Harm van der Walt
{"title":"The order bidual of C(X) for a realcompact space","authors":"Marcel de Jeu, Jan Harm van der Walt","doi":"10.2989/16073606.2023.2287816","DOIUrl":"https://doi.org/10.2989/16073606.2023.2287816","url":null,"abstract":"It is well known that the bidual of C(X) for a compact space X, supplied with the Arens product, is isometrically isomorphic as a Banach algebra to for some compact space . The space is unique up...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"25 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073546","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
To the memory of W.A.J. Luxemburg and his mathematical legacy 缅怀 W.A.J. 卢森堡及其数学遗产
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-07 DOI: 10.2989/16073606.2023.2287813
Koos Grobler, Sanne ter Host, Ben de Pagter, Anton R. Schep
{"title":"To the memory of W.A.J. Luxemburg and his mathematical legacy","authors":"Koos Grobler, Sanne ter Host, Ben de Pagter, Anton R. Schep","doi":"10.2989/16073606.2023.2287813","DOIUrl":"https://doi.org/10.2989/16073606.2023.2287813","url":null,"abstract":"Published in Quaestiones Mathematicae (Vol. 47, No. sup1, 2024)","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"2015 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073581","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
Generalized domination of ergodic elements in ordered Banach algebras 有序巴拿赫代数中遍历元的广义支配
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2024-03-07 DOI: 10.2989/16073606.2023.2287851
S. Mouton, A.D. Rabearivony
{"title":"Generalized domination of ergodic elements in ordered Banach algebras","authors":"S. Mouton, A.D. Rabearivony","doi":"10.2989/16073606.2023.2287851","DOIUrl":"https://doi.org/10.2989/16073606.2023.2287851","url":null,"abstract":"Let A be an ordered Banach algebra and a, b ∈ A such that 0 ≤ a ≤ b. The domination problem involves finding natural conditions under which properties of b will be inherited by a. In [12] this prob...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"16 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073613","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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