Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Ramos-Fernández Julio C."'
Publikováno v:
Concrete Operators, Vol 10, Iss 1, Pp 297-304 (2023)
In this article, all sequences u{\boldsymbol{u}}, v{\boldsymbol{v}}, and w{\boldsymbol{w}} that define continuous and compact tridiagonal operators Tu,v,w{T}_{u,v,w} acting on the weighted sequence space lβ2{l}_{\beta }^{2} were characterized. Addit
Externí odkaz:
https://doaj.org/article/8ba332af31ee49d6b30c1e3a9efa6e2b
Publikováno v:
Open Mathematics, Vol 19, Iss 1, Pp 492-504 (2021)
In this paper, the functions u∈BVφ[0,1]u\in B{V}_{\varphi }\left[0,1] which define compact and Fredholm multiplication operators Mu{M}_{u} acting on the space of functions of bounded φ\varphi -variation are studied. All the functions u∈BVφ[0,1
Externí odkaz:
https://doaj.org/article/093254f3df2e4163b67462802c2b5e21
Publikováno v:
Demonstratio Mathematica, Vol 50, Iss 1, Pp 105-115 (2017)
In this paper,we study the properties of the multiplication operator acting on the bounded variation space BV[0, 1]. In particular,we show the existence of non-null compact multiplication operators on BV[0, 1] and non-invertible Fredholm multiplicati
Externí odkaz:
https://doaj.org/article/4a55715ff5dd42a2a467e20c66dd8464
Autor:
Reyes, Christian1 (AUTHOR) christian.reyes@cinvestav.mx, Ramos-Fernández, Julio C.2 (AUTHOR) jramos@upp.edu.mx, Espinoza, Eduardo S.1,3 (AUTHOR) eduardo.espinoza@cinvestav.mx, Lozano, Rogelio1 (AUTHOR) rogelio.lozano@cinvestav.mx
Publikováno v:
Algorithms. Sep2024, Vol. 17 Issue 9, p391. 16p.
Akademický článek
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Autor:
Sanabria, José E.1 (AUTHOR) jesanabri@gmail.com, Ramos-Fernández, Julio C.2 (AUTHOR) jcramosf@udistrital.edu.co, Sánchez C., Rainier V.3 (AUTHOR) rainiersan76@gmail.com
Publikováno v:
International Journal of Geometric Methods in Modern Physics. Aug2024, p1. 30p.
Publikováno v:
Analysis (0174-4747); May2024, Vol. 44 Issue 2, p85-92, 8p
In this article, we estimate the essential norm of weighted composition operator $W_{u, \varphi}$, acting on the logarithmic Bloch space $\mathcal{B}^{v_{\log}}$, in terms of the $n$-power of the analytic function $\varphi$ and the norm of the $n$-po
Externí odkaz:
http://arxiv.org/abs/1409.3281
Autor:
Ramos-Fernández, Julio C.
Let \mu be any weight function defined on the unit disk $\Bbb D$ and let $\phi$ be an analytic self-map of $\Bbb D$. In the present paper we show that the essential norm of composition operator $C_\phi$ mapping from the $\alpha$-Bloch space, with $\a
Externí odkaz:
http://arxiv.org/abs/1301.2740
Autor:
Ramos-Fernández, Julio C.
We characterize all entire functions that transform a weighted Banach spaces of analytic functions $\mathcal{H}^{\infty}_{\mu_1}$ into another space of the same kind $\mathcal{H}^{\infty}_{\mu_2}$ by superposition for very general weights $\mu_1$ and
Externí odkaz:
http://arxiv.org/abs/1203.5857