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Dual spheres have the same girth

✍ Scribed by Alvarez Paiva, J.C


Book ID
118226384
Publisher
John Hopkins University Press
Year
2006
Tongue
English
Weight
354 KB
Volume
128
Category
Article
ISSN
0002-9327

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We define the connectivity function of a matroid M on a set ## E as c(M; X)=r(X)+r(E\X)-r(E)+ 1(X c E), where r is the rank function of M. Cunningham conjectured that a connected matroid is determined, up to duality, by its connectivity function. proved this for binary matroids and we shall prov