发布求助
文献互助 智能选刊 最新文献

Glasnik Matematicki最新文献

筛选
英文 中文
Uniform regularity for the nonisentropic MHD system 非等熵MHD系统的均匀正则性
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-12-30 DOI: 10.3336/gm.57.2.08
Kunlong Shi, T. Tang
{"title":"Uniform regularity for the nonisentropic MHD system","authors":"Kunlong Shi, T. Tang","doi":"10.3336/gm.57.2.08","DOIUrl":"https://doi.org/10.3336/gm.57.2.08","url":null,"abstract":"In this work, we prove the uniform regularity of smooth solutions to the full compressible MHD system in (mathbb{T}^3). Here our result is obtained by using the\u0000bilinear commutator and product estimates.","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87107330","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 generalization of some instability results for Riccati equations via nonassociative algebras 利用非结合代数推广Riccati方程的一些不稳定性结果
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-12-30 DOI: 10.3336/gm.57.2.06
Hamza Boujemaa, B. Ferčec
{"title":"On a generalization of some instability results for Riccati equations via nonassociative algebras","authors":"Hamza Boujemaa, B. Ferčec","doi":"10.3336/gm.57.2.06","DOIUrl":"https://doi.org/10.3336/gm.57.2.06","url":null,"abstract":"In [28], for any real non associative algebra of dimension (mgeq2),\u0000having (k) linearly independent nilpotent elements (n_{1}), (n_{2}), …,\u0000(n_{k},) (1leq kleq m-1), Mencinger and Zalar defined near idempotents and\u0000near nilpotents associated to (n_{1}), (n_{2}), …, (n_{k}). Assuming\u0000(mathcal{N}_{k}mathcal{N}_{k}=left{ 0right}), where (mathcal{N}\u0000_{k}=operatorname*{span}left{ n_{1},n_{2},ldots,n_{k}right} ), they\u0000showed that if there exists a near idempotent or a near nilpotent, called (u),\u0000associated to (n_{1},n_{2},ldots,n_{k}) verifying (n_{i}uinmathbb{R}n_{i},)\u0000for (1leq ileq k), then any nilpotent element in (mathcal{N}_{k}) is\u0000unstable. They also raised the question of extending their results to cases\u0000where (mathcal{N}_{k}mathcal{N}_{k}not =left{ 0right} ) with\u0000(mathcal{N}_{k}mathcal{N}_{k}subsetmathcal{N}_{k}mathcal{ })and to cases\u0000where (mathcal{N}_{k}mathcal{N}_{k} notsubset mathcal{N}_{k}.)\u0000\u0000\u0000In this paper, positive answers are emphasized and in some cases under the\u0000weaker conditions (n_{i}uinmathcal{N}_{k}). In addition, we characterize all\u0000such algebras in dimension 3.","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77535558","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
Relative energy inequality and weak-strong uniqueness for an isothermal non-Newtonian compressible fluid 等温非牛顿可压缩流体的相对能量不平等和弱-强唯一性
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-10-24 DOI: 10.3336/gm.58.1.07
Richard Andr'avsik, V'aclav M'acha, Rostislav Vod'ak
{"title":"Relative energy inequality and weak-strong uniqueness for an isothermal non-Newtonian compressible fluid","authors":"Richard Andr'avsik, V'aclav M'acha, Rostislav Vod'ak","doi":"10.3336/gm.58.1.07","DOIUrl":"https://doi.org/10.3336/gm.58.1.07","url":null,"abstract":"Our paper deals with three-dimensional nonsteady Navier-Stokes equations for non-Newtonian compressible fluids. It contains a de­ri­va­tion of the relative energy inequality for the weak solutions to these equations. We show that the standard energy inequality implies the relative energy inequality. Consequently, the relative energy inequality allows us to achieve a weak-strong uniqueness result. In other words, we present that the weak solution of the Navier-Stokes system coincides with the strong solution emanated from the same initial conditions as long as the strong solution exists. For this purpose, a new assumption on the coercivity of the viscous stress tensor was introduced along with two natural examples satisfying it.","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80853275","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 multiplicity in Pillai's problem with Fibonacci numbers and powers of a fixed prime 关于皮莱的斐波那契数和定素数幂问题的多重性
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-07-24 DOI: 10.3336/gm.57.2.02
Herbert Batte, Mahadi Ddamulira, Juma Kasozi, F. Luca
{"title":"On the multiplicity in Pillai's problem with Fibonacci numbers and powers of a fixed prime","authors":"Herbert Batte, Mahadi Ddamulira, Juma Kasozi, F. Luca","doi":"10.3336/gm.57.2.02","DOIUrl":"https://doi.org/10.3336/gm.57.2.02","url":null,"abstract":"Let ( {F_n}_{ngeq 0} ) be the sequence of Fibonacci numbers and let (p) be a prime. For an integer (c) we write (m_{F,p}(c)) for the number of distinct representations of (c) as (F_k-p^ell) with (kge 2) and (ellge 0). We prove that (m_{F,p}(c)le 4).","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74079792","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: 2
Graphs of curves for surfaces with finite-invariance index (1) 具有有限不变指标曲面的曲线图 (1)
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-06-28 DOI: 10.3336/gm.57.1.08
Justin Lanier, Marissa Loving
{"title":"Graphs of curves for surfaces with finite-invariance index (1)","authors":"Justin Lanier, Marissa Loving","doi":"10.3336/gm.57.1.08","DOIUrl":"https://doi.org/10.3336/gm.57.1.08","url":null,"abstract":"In this note we make progress toward a conjecture of Durham–Fanoni–Vlamis, showing that every infinite-type surface with fi­ni­te-invariance index (1) and no nondisplaceable compact subsurfaces fails to have a good graph of curves, that is, a connected graph where vertices represent homotopy classes of essential simple closed curves and with a natural mapping class group action having infinite diameter orbits. Our arguments use tools developed by Mann–Rafi in their study of the coarse geometry of big mapping class groups.","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73263424","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: 2
Jacobson's lemma for the generalized (n)-strong Drazin inverses in rings and in operator algebras 环和算子代数中广义(n) -强Drazin逆的Jacobson引理
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-06-28 DOI: 10.3336/gm.57.1.01
Yanxun Ren, Lining Jiang
{"title":"Jacobson's lemma for the generalized (n)-strong Drazin inverses in rings and in operator algebras","authors":"Yanxun Ren, Lining Jiang","doi":"10.3336/gm.57.1.01","DOIUrl":"https://doi.org/10.3336/gm.57.1.01","url":null,"abstract":"In this paper, we extend Jacobson's lemma for Drazin inverses to the generalized (n)-strong Drazin inverses in a ring, and prove that (1-ac) is generalized (n)-strong Drazin invertible if and only if (1-ba) is generalized (n)-strong Drazin invertible, provided that (a(ba)^{2}=abaca=acaba=(ac)^{2}a). In addition, Jacobson's lemma for the left and right Fredholm operators, and furthermore, for consistent in invertibility spectral property and consistent in Fredholm and index spectral property are investigated.","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79685110","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
Approximately orthogonality preserving mappings on Hilbert (C_{0}(Z))-modules Hilbert (C_{0}(Z)) -模上的近似正交保持映射
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-06-28 DOI: 10.3336/gm.57.1.05
M. Asadi, Zahra Hassanpour Yakhdani, Fatemeh Olyaninezhad, A. Sahleh
{"title":"Approximately orthogonality preserving mappings on Hilbert (C_{0}(Z))-modules","authors":"M. Asadi, Zahra Hassanpour Yakhdani, Fatemeh Olyaninezhad, A. Sahleh","doi":"10.3336/gm.57.1.05","DOIUrl":"https://doi.org/10.3336/gm.57.1.05","url":null,"abstract":"In this paper, we will use the categorical approach to\u0000Hilbert (C^{ast})-modules over a commutative (C^{ast})-algebra\u0000to investigate the approximately orthogonality preserving mappings\u0000on Hilbert (C^{ast})-modules over a commutative\u0000(C^{ast})-algebra.\u0000\u0000 Indeed, we show that if (Psi:Gamma rightarrow Gamma^{prime}\u0000) is a nonzero ( C_{0}(Z) )-linear\u0000 (( delta , varepsilon))-orthogonality preserving mapping\u0000 between the continuous fields of Hilbert spaces on a locally\u0000compact Hausdorff space (Z), then (Psi) is injective, continuous\u0000and also for every ( x, y in Gamma ) and (z in Z),\u0000[\u0000\u0000\u0000\u0000vert\u0000langle Psi(x),Psi(y) rangle(z) - varphi^2(z) langle x,y\u0000rangle(z) vert leq frac{4(varepsilon -\u0000delta)}{(1-delta)(1+varepsilon)} Vert Psi(x) Vert Vert\u0000Psi(y) Vert,\u0000\u0000\u0000]\u0000where (varphi(z) = sup { Vert Psi(u)(z)\u0000Vert : u ~ text{is a unit vector in} ~ Gamma }).","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77295519","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 finite coarse shape - inverse systems approach and intrinsic approach 有限粗形逆系统方法和本征方法
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-06-28 DOI: 10.3336/gm.57.1.07
I. Jelić, Nikola Koceić Bilan
{"title":"The finite coarse shape - inverse systems approach and intrinsic approach","authors":"I. Jelić, Nikola Koceić Bilan","doi":"10.3336/gm.57.1.07","DOIUrl":"https://doi.org/10.3336/gm.57.1.07","url":null,"abstract":"Given an arbitrary category (mathcal{C}), a category (pro^{*^f})-(mathcal{C}) is constructed such that the known (pro)-(mathcal{C}) category may be considered as a subcategory of (pro^{*^f})-(mathcal{C}) and that (pro^{*^f})-(mathcal{C}) may be considered as a subcategory of (pro^*)-(mathcal{C}). Analogously to the construction of the shape category (Sh_{(mathcal{C},mathcal{D})}) and the coarse category (Sh^*_{(mathcal{C},mathcal{D})}), an (abstract) finite coarse shape category (Sh^{*^f}_{(mathcal{C},mathcal{D})}) is obtained. Between these three categories appropriate faithful functors are defined. The finite coarse shape is also defined by an intrinsic approach using the notion of the (epsilon)-continuity. The isomorphism of the finite coarse shape categories obtained by these two approaches is constructed. Besides, an overview of some basic properties related to the notion of the (epsilon)-continuity is given.","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81040806","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: 2
Reconstruction properties of selective Rips complexes 选择性Rips配合物的重构性质
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-06-28 DOI: 10.3336/gm.57.1.06
Boštjan Lemež, Žiga Virk
{"title":"Reconstruction properties of selective Rips complexes","authors":"Boštjan Lemež, Žiga Virk","doi":"10.3336/gm.57.1.06","DOIUrl":"https://doi.org/10.3336/gm.57.1.06","url":null,"abstract":"Selective Rips complexes associated to two parameters are certain subcomplexes of Rips complexes consisting of thin simplices. They are designed to detect more closed geodesics than their Rips counterparts. In this paper we introduce a general definition of selective Rips complexes with countably many parameters and prove basic reconstruction properties associated with them. In particular, we prove that selective Rips complexes of a closed Riemannian manifold (X) attain the homotopy type of (X) at small scales.\u0000We also completely classify the resulting persistent fundamental group and (1)-dimensional persistent homology.","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79631741","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: 3
A generalized two-sweep shift splitting methodfor non-Hermitian positive definite linear systems 非厄米正定线性系统的广义双扫描位移分裂方法
IF 0.4 4区 数学
Glasnik Matematicki Pub Date : 2022-06-28 DOI: 10.3336/gm.57.1.10
Shiliang Wu, Cuixia Li
{"title":"A generalized two-sweep shift splitting method\u0000for non-Hermitian positive definite linear systems","authors":"Shiliang Wu, Cuixia Li","doi":"10.3336/gm.57.1.10","DOIUrl":"https://doi.org/10.3336/gm.57.1.10","url":null,"abstract":"In this paper, based on the shift splitting of the\u0000coefficient matrix, a generalized two-sweep shift splitting (GTSS)\u0000method is introduced to solve the non-Hermitian positive definite\u0000linear systems. Theoretical analysis shows that the GTSS method is\u0000convergent to the unique solution of the linear systems under a\u0000loose restriction on the iteration parameter. Numerical experiments\u0000are reported to the efficiency of the GTSS method.","PeriodicalId":55601,"journal":{"name":"Glasnik Matematicki","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79386358","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
首页 上一页 下一页 尾页
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
现在去查看 取消
×
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