Title
A Hilton-Milner theorem for vector spaces
Abstract
We show for k >= 2 that if q >= 3 and n >= 2k + 1, or q = 2 and n >= 2k + 2, then any intersecting family F of k-subspaces of an n-dimensional vector space over GF(q) with boolean AND(F is an element of F) F=0 has size at most [n-1 k-1] - q(k(k-1)) [n-k-1 k-1] + q(k). This bound is sharp as is shown by Hilton-Milner type families. As an application of this result, we determine the chromatic number of the corresponding q-Kneser graphs.
Year
Venue
Keywords
2010
ELECTRONIC JOURNAL OF COMBINATORICS
vector space
Field
DocType
Volume
Discrete mathematics,Graph,Vector space,Combinatorics,Mathematics
Journal
17.0
Issue
ISSN
Citations 
1.0
1077-8926
21
PageRank 
References 
Authors
1.31
9
7
Name
Order
Citations
PageRank
A. Blokhuis127262.73
A. E. Brouwer2211.31
A. Chowdhury3211.31
Peter Frankl4544.37
T. Mussche5211.31
Balázs Patkós68521.60
T. Sz7211.31