Title
Binomial andQ-Binomial Coefficient Inequalities Related to the Hamiltonicity of the Kneser Graphs and TheirQ-Analogues
Abstract
The Kneser graphK(n, k) has as vertices all thek-subsets of a fixedn-set and has as edges the pairs {A, B} of vertices such thatAandBare disjoint. It is known that these graphs are Hamiltonian if[formula]forn⩾2k+1. We determine asymptotically for fixedkthe minimum valuen=e(k) for which this inequality holds. In addition we give an asymptotic formula for the solution ofkΓ(n)Γ(n−2k+1)=Γ2(n−k+1) forn⩾2k+1, ask→∞, whennandkare not restricted to take integer values. We also show that for all prime powersqandn⩾2k,k⩾1, theq-analoguesKq(n, k) are Hamiltonian by consideration of the analogous inequality forq-binomial coefficients.
Year
DOI
Venue
1996
10.1006/jcta.1996.0089
Journal of Combinatorial Theory, Series A
DocType
Volume
Issue
Journal
76
1
ISSN
Citations 
PageRank 
0097-3165
4
0.56
References 
Authors
1
2
Name
Order
Citations
PageRank
W. Edwin Clark113623.14
Mourad E. H. Ismail27525.95