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pro vyhledávání: '"Nguyen, Viet Hang"'
Autor:
Nguyen, Viet Hang
La théorie de la rigidité étudie l'unicité des réalisations des graphes, i.e., des charpentes. Initialement motivée par l'ingénierie des structures, la théorie de la rigidité trouve aujourd'hui des applications dans plusieurs domaines import
Externí odkaz:
http://www.theses.fr/2013GRENM052/document
Autor:
Nguyen, Viet hang
La théorie de la rigidité étudie l'unicité des réalisations des graphes, i.e., des charpentes. Initialement motivée par l'ingénierie des structures, la théorie de la rigidité trouve aujourd'hui des applications dans plusieurs domaines import
Externí odkaz:
http://tel.archives-ouvertes.fr/tel-00992387
http://tel.archives-ouvertes.fr/docs/00/99/23/87/PDF/35566_NGUYEN_2013_archivage.pdf
http://tel.archives-ouvertes.fr/docs/00/99/23/87/PDF/35566_NGUYEN_2013_archivage.pdf
Autor:
Nguyen, Viet Hang
We show that if $G$ is a connected graph of maximum degree at most $4$, which is not $C_{2,5}$, then the strong matching number of $G$ is at least $\frac{1}{9}n(G)$. This bound is tight and the proof implies a polynomial time algorithm to find an ind
Externí odkaz:
http://arxiv.org/abs/1407.7604
Autor:
Alfakih, A. Y., Nguyen, Viet-Hang
Recently, Alfakih and Ye [Lin. Algebra Appl. 438:31--36, 2013] proved that if an $r$-dimensional bar framework $(G,p)$ on $n \geq r+2$ nodes in general position in $\R^r$ admits a positive semidefinite stress matrix with rank $n-r-1$, then $(G,p)$ is
Externí odkaz:
http://arxiv.org/abs/1305.5955
We provide the directed counterpart of a slight extension of Katoh and Tanigawa's result on rooted-tree decompositions with matroid constraints. Our result characterises digraphs having a packing of arborescences with matroid constraints. It is a pro
Externí odkaz:
http://arxiv.org/abs/1207.1985
Autor:
Jackson, Bill, Nguyen, Viet Hang
Publikováno v:
In European Journal of Combinatorics May 2015 46:51-67
Autor:
Alfakih, A.Y., Nguyen, Viet-Hang
Publikováno v:
In Linear Algebra and Its Applications 15 November 2013 439(10):3134-3147
Two Recovered COVID-19 Cases Testing Positive Again for SARS-CoV-2 After Discharge in Hanoi, Vietnam
Publikováno v:
Archives of Clinical and Medical Case Reports.
Vietnam has successfully controlled the first waves of SARS-CoV-2 and has seen no community transmission since 15 April. One of the keys to this success is consistent quarantine of individuals who have been in contact with suspected cases or who are
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