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The solution set to the nonlinear operator equation XAX = BX on Hilbert spaces 希尔伯特空间上非线性算子方程XAX = BX的解集
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2274586
Hua Wang, Jingsong Wu
{"title":"The solution set to the nonlinear operator equation XAX = BX on Hilbert spaces","authors":"Hua Wang, Jingsong Wu","doi":"10.2989/16073606.2023.2274586","DOIUrl":"https://doi.org/10.2989/16073606.2023.2274586","url":null,"abstract":"We present the representation of solution sets of the operator equation XAX = BX on Hilbert spaces by taking advantage of the invariant subspace of B, including solution sets of nonzero solutions, ...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"10 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536628","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
Extension properties for monotone sublinear operators 单调次线性算子的可拓性质
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2274605
Sorin G. Gal
{"title":"Extension properties for monotone sublinear operators","authors":"Sorin G. Gal","doi":"10.2989/16073606.2023.2274605","DOIUrl":"https://doi.org/10.2989/16073606.2023.2274605","url":null,"abstract":"In this paper we obtain extension properties for monotone sublinear operators. The results obtained generalize those known for positive linear operators. Several examples illustrating the results o...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"84 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536631","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 number of distinguishing colorings of a Cartesian product graph 笛卡尔积图的可区分颜色的数目
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2274580
Saeid Alikhani, Mohammad H. Shekarriz
{"title":"The number of distinguishing colorings of a Cartesian product graph","authors":"Saeid Alikhani, Mohammad H. Shekarriz","doi":"10.2989/16073606.2023.2274580","DOIUrl":"https://doi.org/10.2989/16073606.2023.2274580","url":null,"abstract":"A vertex coloring is called distinguishing if the identity is the only automorphism that can preserve it. The distinguishing threshold θ(G) of a graph G is the minimum number of colors k required t...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"8 6 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536639","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
Inverse problem of determining the coefficient in a sixth order Boussinesq equation with additional nonlocal integral condition 具有附加非局部积分条件的六阶Boussinesq方程系数的反演问题
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2280249
A.S. Farajov, M.J. Huntul, Yashar T. Mehraliyev
{"title":"Inverse problem of determining the coefficient in a sixth order Boussinesq equation with additional nonlocal integral condition","authors":"A.S. Farajov, M.J. Huntul, Yashar T. Mehraliyev","doi":"10.2989/16073606.2023.2280249","DOIUrl":"https://doi.org/10.2989/16073606.2023.2280249","url":null,"abstract":"The work is devoted to the study of the solvability of the inverse boundary value problem with an unknown time depended coefficient for a sixth-order Boussinesq equation with an additional integral...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"25 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536621","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 difference graph of power graphs of finite groups 有限群幂图的差分图
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2278078
Jitender Kumar, Ramesh Prasad Panda, Parveen
{"title":"On the difference graph of power graphs of finite groups","authors":"Jitender Kumar, Ramesh Prasad Panda, Parveen","doi":"10.2989/16073606.2023.2278078","DOIUrl":"https://doi.org/10.2989/16073606.2023.2278078","url":null,"abstract":"The power graph of a finite group G is the simple undirected graph with vertex set G whose two vertices are adjacent if one is a power of the other. The enhanced power graph of a finite group G is ...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"199 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536629","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: 1
Argument estimates associated with meromorphic close-to-starlike and Bazilević functions 与亚纯近星函数和bazileviki函数相关的辐角估计
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2279275
Nak Eun Cho, Inhwa Kim, H.M. Srivastava
{"title":"Argument estimates associated with meromorphic close-to-starlike and Bazilević functions","authors":"Nak Eun Cho, Inhwa Kim, H.M. Srivastava","doi":"10.2989/16073606.2023.2279275","DOIUrl":"https://doi.org/10.2989/16073606.2023.2279275","url":null,"abstract":"The object of the present paper is to derive some argument properties associated with meromorphic close-to-starlike and Bazilević functions in the punctured open unit disk. Furthermore, we investig...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"15 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536637","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
Discrete selectivity, shrinking properties, and disjoint local π-bases 离散选择性，收缩性质和不相交局部π基
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2279698
Gary Gruenhage, Vladimir V. Tkachuk
{"title":"Discrete selectivity, shrinking properties, and disjoint local π-bases","authors":"Gary Gruenhage, Vladimir V. Tkachuk","doi":"10.2989/16073606.2023.2279698","DOIUrl":"https://doi.org/10.2989/16073606.2023.2279698","url":null,"abstract":"Using binary function spaces, we give an example of a pseudocompact discretely selective topological group. We show that, under PFA, every compact space of countable tightness has a countable disjo...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"24 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536638","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
Super-skewsymmetric super-biderivations on the N = 1 super Heisenberg-Virasoro algebra N = 1超Heisenberg-Virasoro代数上的超偏对称超推导
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2274585
Jinlu Li, Jiancai Sun
{"title":"Super-skewsymmetric super-biderivations on the N = 1 super Heisenberg-Virasoro algebra","authors":"Jinlu Li, Jiancai Sun","doi":"10.2989/16073606.2023.2274585","DOIUrl":"https://doi.org/10.2989/16073606.2023.2274585","url":null,"abstract":"In this paper, the super-skewsymmetric super-biderivations on the N = 1 super Heisenberg-Virasoro algebra are completely determined. Furthermore, we find that every super-skewsymmetric super-bideri...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"31 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536641","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
Uniformly S-Noetherian rings 均匀s - noether环
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2278744
Mingzhao Chen, Hwankoo Kim, Wei Qi, Fanggui Wang, Wei Zhao
{"title":"Uniformly S-Noetherian rings","authors":"Mingzhao Chen, Hwankoo Kim, Wei Qi, Fanggui Wang, Wei Zhao","doi":"10.2989/16073606.2023.2278744","DOIUrl":"https://doi.org/10.2989/16073606.2023.2278744","url":null,"abstract":"Let R be a ring and S be a multiplicative subset of R. Then R is called a uniformly S-Noetherian ring if there exists s ∈ S such that, for any ideal I of R, sI ⊆ K for some finitely generated subid...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"20 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536632","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
Generating functions of multiple t-star values 生成多个t星值的函数
IF 0.7 4区 数学
Quaestiones Mathematicae Pub Date : 2023-11-30 DOI: 10.2989/16073606.2023.2281554
Zhonghua Li, Lu Yan
{"title":"Generating functions of multiple t-star values","authors":"Zhonghua Li, Lu Yan","doi":"10.2989/16073606.2023.2281554","DOIUrl":"https://doi.org/10.2989/16073606.2023.2281554","url":null,"abstract":"In this paper, we study the generating functions of multiple t-star values with an arbitrary number of blocks of twos, which are based on the results of the corresponding generating functions of mu...","PeriodicalId":49652,"journal":{"name":"Quaestiones Mathematicae","volume":"53 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138536636","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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