Annali dell''Universita di Ferrara最新文献_第3页

Generalized principal logarithms and Riemannian properties of a class of subgroups of (mathbf {U_n}) endowed with the Frobenius bi-invariant metric 一类具有Frobenius双不变度量的(mathbf {U_n})子群的广义主对数和黎曼性质

Annali dell''Universita di Ferrara Pub Date : 2024-12-05 DOI: 10.1007/s11565-024-00561-1

Donato Pertici, Alberto Dolcetti

引用次数: 0

Static perfect fluid spacetimes on f-Kenmotsu 3-manifolds f-Kenmotsu 3流形上的静态完美流体时空

Annali dell''Universita di Ferrara Pub Date : 2024-12-05 DOI: 10.1007/s11565-024-00576-8

Uday Chand De, Arpan Sardar

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引用次数: 0

Building a random network with a given expected giant component 用给定的预期的巨大组件构建一个随机网络

Annali dell''Universita di Ferrara Pub Date : 2024-12-05 DOI: 10.1007/s11565-024-00575-9

Lorenzo Federico, Ayoub Mounim

引用次数: 0

Bivariate generalization for operators involving Appostol-Genocchi polynomial 涉及Appostol-Genocchi多项式算子的二元泛化

Annali dell''Universita di Ferrara Pub Date : 2024-12-04 DOI: 10.1007/s11565-024-00562-0

Km. Lipi, Naokant Deo

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引用次数: 0

The parallel postulate 平行公设

Annali dell''Universita di Ferrara Pub Date : 2024-12-03 DOI: 10.1007/s11565-024-00572-y

Victor Pambuccian

引用次数: 0

An inertial method for solving bilevel variational inequality problems with fixed point constraints 求解带不动点约束的二水平变分不等式问题的惯性方法

Annali dell''Universita di Ferrara Pub Date : 2024-11-29 DOI: 10.1007/s11565-024-00571-z

Yirga Abebe Belay, Habtu Zegeye, Oganeditse A. Boikanyo, Dintle Kagiso, Hagos Hailu Gidey

引用次数: 0

Spectral analysis of operator matrices: limit point insights 算子矩阵的谱分析：极限点的见解

Annali dell''Universita di Ferrara Pub Date : 2024-11-29 DOI: 10.1007/s11565-024-00573-x

Aymen Bahloul

{"title":"Spectral analysis of operator matrices: limit point insights","authors":"Aymen Bahloul","doi":"10.1007/s11565-024-00573-x","DOIUrl":"10.1007/s11565-024-00573-x","url":null,"abstract":"<div>This paper explores the potential of local spectral theory to investigate the limit point set of the descent spectrum of upper triangular operator matrices, denoted by ({mathcal {T}}), on Banach spaces. We rigorously prove that transitioning from the accumulation set of the diagonal descent spectrum, denoted by ( hbox {Acc} sigma _{textrm{d}}({mathcal {T}}_textbf{diag})), to that of the complete descent spectrum, ( hbox {Acc} sigma _{textrm{d}}({mathcal {T}})), involves removing specific subsets within ( hbox {Acc} sigma _{textrm{d}}(A_1) cap hbox {Acc} sigma _{textrm{a}}(A_2) cap hbox {Acc} sigma _{textrm{a}}(A_3)). Additionally, we present sufficient conditions that ensure the limit points of the descent spectrum of the operator matrix encompass the combined limit points of its diagonal entry spectra. This significantly addresses a longstanding question posed by Campbell (Linear Multilinear Algebra 14:195–198, 1983) regarding the limit points for the descent spectrum of the last (3 times 3) operator matrix form. Specifically, Campbell inquired about developing new methods to analyze the spectral properties of such matrices without resorting to partitioning their entries, a challenge that has remained unresolved for decades. Our findings provide a comprehensive solution, illustrating that a deeper understanding of the spectral behavior can be achieved by considering the entire matrix structure collectively.</div>","PeriodicalId":35009,"journal":{"name":"Annali dell''Universita di Ferrara","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142753955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Location of zeros of quaternionic polynomials 四元多项式的零点位置

Annali dell''Universita di Ferrara Pub Date : 2024-11-22 DOI: 10.1007/s11565-024-00568-8

Idrees Qasim

引用次数: 0

Asymptotic behavior of laminated beams with Kelvin-Voigt damping 具有 Kelvin-Voigt 阻尼的层压梁的渐近行为

Annali dell''Universita di Ferrara Pub Date : 2024-11-21 DOI: 10.1007/s11565-024-00559-9

Victor R. Cabanillas, Teófanes Quispe Méndez

引用次数: 0

Borel exceptional values of q-shift polynomials q 移位多项式的 Borel 特殊值

Annali dell''Universita di Ferrara Pub Date : 2024-11-21 DOI: 10.1007/s11565-024-00570-0

M. Tejuswini, N. Shilpa

引用次数: 0