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pro vyhledávání: '"RUIKSON S. O. NUNES"'
Autor:
Ruikson S. O. Nunes
Publikováno v:
Electronic Journal of Differential Equations, Vol 2021, Iss 49,, Pp 1-12 (2021)
Externí odkaz:
https://doaj.org/article/df2c0893def84f709130296abf147e3c
Publikováno v:
Electronic Journal of Differential Equations, Vol 2017, Iss 06,, Pp 1-16 (2017)
In this article we study the exact controllability with Neumann boundary controls for a system of linear wave equations coupled in parallel by lower order terms on piecewise smooth domains of the plane. We obtain square integrable controls for ini
Externí odkaz:
https://doaj.org/article/011b682eda2e4f85af4279e623d5350b
Autor:
RUIKSON S. O. NUNES
Publikováno v:
TEMA, Vol 21, Iss 2, Pp 371-380 (2020)
TEMA (São Carlos) v.21 n.2 2020
TEMA (Sociedade Brasileira de Matemática Aplicada e Computacional. Online)
Sociedade Brasileira de Matemática Aplicada e Computacional
instacron:SBMAC
TEMA (São Carlos) v.21 n.2 2020
TEMA (Sociedade Brasileira de Matemática Aplicada e Computacional. Online)
Sociedade Brasileira de Matemática Aplicada e Computacional
instacron:SBMAC
The purpose of this paper is to study an exact boundary controllability problem in noncylindrical domains for the linear Klein-Gordon equation. Here, we work near of the extension techniques presented By J. Lagnese in (12) which is based in the Russe
Publikováno v:
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Made available in DSpace on 2020-12-12T01:06:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-02-01 In the present paper, we study energy decay and exact boundary controllability for a system of n one-dimensional linear wave equations couple
Autor:
Ruikson S. O. Nunes
Publikováno v:
Mediterranean Journal of Mathematics. 18
The aim of this paper is to study an exact boundary controllability problem and local energy decay for a system of m linearly coupled wave equations . We obtain control time near of the optimal time with control of Neuman type acting on all boundary
Autor:
W.D. Bastos, Ruikson S. O. Nunes
Publikováno v:
Journal of Mathematical Analysis and Applications. 445:394-406
We study time analyticity for the solutions of the linear Klein–Gordon equation in R N , N ≥ 1 and use it to obtain essentially optimal time boundary controllability in piecewise smooth domains. The initial state has finite energy and the control
Autor:
W.D. Bastos, Ruikson S. O. Nunes
Publikováno v:
Journal of Mathematical Analysis and Applications. 414:934-944
In this work we study the asymptotic behavior of the solutions of the linear Klein–Gordon equation in R N , N ⩾ 1 . We prove that local energy of solutions to the Cauchy problem decays polynomially. Afterwards, we use the local decay of energy to