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pro vyhledávání: '"completely positive graphs"'
Autor:
Krupnik, Noam ⁎, Berman, Abraham
Publikováno v:
In Linear Algebra and Its Applications April 2024
Autor:
Abraham Berman
Publikováno v:
AKCE International Journal of Graphs and Combinatorics, Vol 20, Iss 2, Pp 156-158 (2023)
AbstractWe present a short survey on completely positive matrices and on their application to quantum information
Externí odkaz:
https://doaj.org/article/f3d373f683b043caa4073673effbf733
Publikováno v:
Special Matrices, Vol 8, Iss 1, Pp 160-171 (2020)
A real symmetric matrix A is said to be completely positive if it can be written as BBt for some (not necessarily square) nonnegative matrix B. A simple graph G is called a completely positive graph if every matrix realization of G that is both nonne
Externí odkaz:
https://doaj.org/article/ca038a5d36fa45b99440ada470f67aae
Akademický článek
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Publikováno v:
Special Matrices, Vol 8, Iss 1, Pp 160-171 (2020)
A real symmetric matrix A is said to be completely positive if it can be written as BBt for some (not necessarily square) nonnegative matrix B. A simple graph G is called a completely positive graph if every matrix realization of G that is both nonne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5fb8cde3073c4b1c2b41d2db3cdba27
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
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Autor:
Felix Goldberg
Publikováno v:
Linear Algebra and its Applications. :45-51
In this paper we establish two results concerning completely positive graphs and their complements: (1) the complement of a completely positive graph on n ⩾9 vertices is not completely positive; (2) the spectral radius of the adjacency matrix of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84267256e5545b97e9c76860c76118bf
Autor:
Francesco Barioli
Publikováno v:
Linear Algebra and its Applications. (1-3):11-31
A new class of graphs, called “book-graphs”, extending the class of completely positive graphs is defined. Necessary and sufficient conditions for the complete positivity of a matrix with graph in this class are given. The main questions concerni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::215565b7c29d6918552cc3d5b239b598