d 2,n 2 ) is a bipartite graphical sequence, if there is a bipartite graph G with degrees {D 1 , D 2 } (i.e., G has two independent vertex sets In other words, {D 1 , D 2 } is a bipartite graphical sequence if and only if there is an n 1 1 n 2 matrix of 0's and 1's having d 1j 1 1's in row j 1 and
โฆ LIBER โฆ
Partitions of a graph into paths with prescribed endvertices and lengths
โ Scribed by Hikoe Enomoto; Katsuhiro Ota
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 95 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
โฆ Synopsis
For a graph G, let ' 2 (G ) denote the minimum degree sum of a pair of nonadjacent vertices. We conjecture that if |V(G)| n i 1 k a i and ' 2 (G ) ! n k ร 1, then for any k vertices v 1 , v 2 , F F F , v k in G, there exist vertex-disjoint paths P 1 , P 2 , F F F , P k such that |V (P i )| a i and v i is an endvertex of P i for 1 i k. In this paper, we verify the conjecture for the cases where almost all a i 5, and the cases where k 3.
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๐ 2 views