Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Loni Delaplane"'
Autor:
Loni Delaplane, Haidong Wu
Publikováno v:
Discrete Mathematics. 312:2062-2068
We give an upper bound and a class of lower bounds on the coefficients of the characteristic polynomial of a simple binary matroid. This generalizes the corresponding bounds for graphic matroids of Li and Tian (1978) [3] , as well as a matroid lower
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e07724e55864cddcc994e775a7e53d9a
https://doi.org/10.1016/j.disc.2012.03.021
https://doi.org/10.1016/j.disc.2012.03.021
Publikováno v:
Discrete Mathematics. 309:3249-3254
A matroid M is called minor-minimally 3-connected if M is 3-connected and, for each [email protected]?E(M), either [email protected]?e or M/e is not 3-connected. In this paper, we prove a chain theorem for the class of minor-minimally 3-connected bin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::041a7f95ecbb939838b236db8a65e971
https://doi.org/10.1016/j.disc.2008.09.027
https://doi.org/10.1016/j.disc.2008.09.027