Mathematics – Combinatorics
Scientific paper
2002-12-17
Mathematics
Combinatorics
12 pages, 1 figure; to appear in Mathematical Methods of Operations Research, added references
Scientific paper
This paper deals with the problem of representing the matching independence system in a graph as the intersection of finitely many matroids. After characterizing the graphs for which the matching independence system is the intersection of two matroids, we study the function mu(G), which is the minimum number of matroids that need to be intersected in order to obtain the set of matchings on a graph G, and examine the maximal value, mu(n), for graphs with n vertices. We describe an integer programming formulation for deciding whether mu(G)<= k. Using combinatorial arguments, we prove that mu(n)is in Omega(loglog n). On the other hand, we establish that mu(n) is in O(log n / loglog n). Finally, we prove that mu(n)=4 for n=5,...,12, and mu(n)=5 for n=13,14,15.
Fekete Sandor P.
Firla Robert T.
Spille Bianca
No associations
LandOfFree
Characterizing Matchings as the Intersection of Matroids does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Characterizing Matchings as the Intersection of Matroids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characterizing Matchings as the Intersection of Matroids will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-259508