Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Chi Wai Leung"'
Autor:
Chi-Wai Leung
Publikováno v:
Proceedings of the American Mathematical Society. 150:1115-1126
Let G G be a locally compact group and let K K be its closed subgroup. Write G ^ K \widehat {G}_{K} for the set of irreducible representations with non-zero K K -invariant vectors. We call a pair ( G , K ) (G,K) admissible if for each irreducible rep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b52c328a17271bb1a251ce13f62817f6
https://doi.org/10.1090/proc/15690
https://doi.org/10.1090/proc/15690
Autor:
Chi-Keung Ng, Chi-Wai Leung
Let $X$ be a (real or complex) Banach space, and $\mathcal{I}(X)$ be the set of all (non-zero and non-identity) idempotents; i.e., bounded linear operators on $X$ whose squares equal themselves. We show that the Banach submanifold $\mathcal{I}(X)$ of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::081e1f6caea38d0279bf4bc65798729a
http://arxiv.org/abs/2001.02352
http://arxiv.org/abs/2001.02352
Autor:
Chi-Wai Leung, Mike Y W Kwan, Shuo Feng, J S Malik Peiris, Kwok-Hung Chan, Benjamin J. Cowling, Eunice L.Y. Chan, Joshua S C Wong, Wing-kin To, Tak-Keung Ng, Susan S. Chiu
Publikováno v:
The Journal of Infectious Diseases. 217:1365-1371
Background Influenza A(H3N2) viruses circulated for 12 consecutive months in Hong Kong in 2016-2017, peaking in late June and July 2017. The objective of our study was to estimate the effectiveness of influenza vaccination in preventing hospitalizati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7984170f5f2f1354d3bfec9d5c8ee0f8
https://doi.org/10.1093/infdis/jiy027
https://doi.org/10.1093/infdis/jiy027
Publikováno v:
Linear Algebra and its Applications. 519:102-110
Let 1 ≤ p ≤ + ∞ . We show that the positive part of the closed unit ball of a non-commutative L p -space, as a metric space, is a complete Jordan ⁎ -invariant for the underlying von Neumann algebra.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9feb2600aefd171cc949322f42f8358f
https://doi.org/10.1016/j.laa.2016.12.033
https://doi.org/10.1016/j.laa.2016.12.033
Autor:
Cheuk-Yin Lee, Chi-Wai Leung
Publikováno v:
Journal of Mathematical Analysis and Applications. 445:556-563
In this study, we introduce the norm-attaining property for a dual pair of Banach spaces. We use this property to determine a quotient Banach space as a dual space. We also apply this property to obtain another proof of the James's characterization t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10a9fc9d69bfa532520472e6a7ef601f
https://doi.org/10.1016/j.jmaa.2016.07.063
https://doi.org/10.1016/j.jmaa.2016.07.063
Publikováno v:
Journal of Mathematical Analysis and Applications. 496:124800
Let ( Ω , A , μ ) and ( Γ , B , ν ) be two arbitrary measure spaces, and p ∈ [ 1 , ∞ ] . Set S ( L p ( μ ) ) + : = { f ∈ L p ( μ ) : ‖ f ‖ p = 1 ; f ≥ 0 μ -a.e. } , that is, the positive part of the unit sphere of L p ( μ ) . We s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::593c4d70f4073b27aa3e8b74cceb38fd
https://doi.org/10.1016/j.jmaa.2020.124800
https://doi.org/10.1016/j.jmaa.2020.124800
Autor:
Eunice L.Y. Chan, Benjamin J. Cowling, Malik Peiris, Susan S. Chiu, Kwok-Hung Chan, Joshua S C Wong, Chi-Wai Leung, Wing-kin To, Tak-Keung Ng, Shuo Feng, Mike Y W Kwan
Publikováno v:
Influenza and Other Respiratory Viruses
From 1 September 2015 through 31 January 2016, we enrolled 2068 children 6 months to 17 years of age admitted to hospital with a febrile acute respiratory infection in our test-negative study. Information on receipt of 2015-16 northern hemisphere ina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9202ebb962c89b94955e8fa94ffd672
https://doi.org/10.1111/irv.12399
https://doi.org/10.1111/irv.12399
Autor:
Chi-Wai Leung, Chi-Keung Ng
Publikováno v:
Journal of Mathematical Analysis and Applications. 438:759-771
In this article, we define and study property T for continuous homomorphisms between topological groups. If G is a locally compact group, we show that λ G : G → U ( L 2 ( G ) ) has property T if and only if either G is compact or G is non-amenable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdb4dfb688f17695e740c5226e22e1aa
https://doi.org/10.1016/j.jmaa.2016.02.026
https://doi.org/10.1016/j.jmaa.2016.02.026
Publikováno v:
Ann. Funct. Anal. 7, no. 1 (2016), 24-32
Enlightened by the notion of perturbation of $C^{*}$ -algebras, we introduce, and study briefly in this article, a notion of closeness of groups. We show that if two groups are “close enough” to each other, and one of them has the property that t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e579728fd1deae7ef38af803719745e
https://doi.org/10.1215/20088752-3163391
https://doi.org/10.1215/20088752-3163391
Autor:
Yiu Chung Lau, Shuo Feng, Benjamin J. Cowling, J. S. Malik Peiris, Eunice L.Y. Chan, Mike Y W Kwan, Susan S. Chiu, Chi-Wai Leung, Joshua S C Wong, Sheena G. Sullivan
Publikováno v:
The Lancet. Respiratory medicine. 6(12)
Summary Background The protection conferred by influenza vaccination is generally thought to last less than a year, necessitating annual revaccination. However, the speed with which influenza vaccine effectiveness might decline during a year is unkno
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b7e4ae95d2c87840c1e0a3cef5db07f
https://pubmed.ncbi.nlm.nih.gov/30442591
https://pubmed.ncbi.nlm.nih.gov/30442591