Sciweavers

COMBINATORICS
1999
73views more  COMBINATORICS 1999»
13 years 4 months ago
A [k, k+1]-Factor Containing A Given Hamiltonian Cycle
We prove the following best possible result. Let k 2 be an integer and G be a graph of order n with minimum degree at least k. Assume n 8k - 16 for even n and n 6k-13 for odd n...
Mao-cheng Cai, Yanjun Li, Mikio Kano
ARSCOM
1999
54views more  ARSCOM 1999»
13 years 4 months ago
Refining the Graph Density Condition for the Existence of Almost K-factors
Alon and Yuster [4] have proven that if a fixed graph K on g vertices is (h + 1)-colorable, then any graph G with n vertices and minimum degree at least h h+1 n contains at least ...
Noga Alon, Eldar Fischer
GC
2002
Springer
13 years 4 months ago
A Note on Cycle Lengths in Graphs
We prove that for every c > 0 there exists a constant K = K(c) such that every graph G with n vertices and minimum degree at least cn contains a cycle of length t for every even...
Ronald J. Gould, Penny E. Haxell, A. D. Scott
ENDM
2002
86views more  ENDM 2002»
13 years 4 months ago
Light Paths in Large Polyhedral Maps with Prescribed Minimum Degree
Let k be an integer and M be a closed 2-manifold with Euler characteristic (M) 0. We prove that each polyhedral map G on M with minimum degree and large number of vertices conta...
Stanislav Jendrol, Heinz-Jürgen Voss
DM
2002
95views more  DM 2002»
13 years 4 months ago
On the superconnectivity of generalized p-cycles
A generalized p-cycle is a digraph whose set of vertices can be partitioned into p parts that are cyclically ordered in such a way that the vertices in one part are adjacent only ...
Camino Balbuena, Ignacio M. Pelayo, J. Góme...
CPC
2000
82views more  CPC 2000»
13 years 4 months ago
On Arithmetic Progressions Of Cycle Lengths In Graphs
A recently posed question of H
Jacques Verstraëte
COMBINATORICA
2004
51views more  COMBINATORICA 2004»
13 years 4 months ago
Nowhere-Zero 4-Flows, Simultaneous Edge-Colorings, And Critical Partial Latin Squares
It is proved in this paper that every bipartite graphic sequence with the minimum degree 2 has a realization that admits a nowhere-zero 4-flow. This result implies a conjecture ...
Rong Luo, Wenan Zang, Cun-Quan Zhang
JGT
2007
99views more  JGT 2007»
13 years 4 months ago
The upper bound of the number of cycles in a 2-factor of a line graph
Let G be a simple graph with order n and minimum degree at least two. In this paper, we prove that if every odd branch-bond in G has an edge-branch, then its line graph has a 2-fa...
Jun Fujisawa, Liming Xiong, Kiyoshi Yoshimoto, She...
JCO
2007
97views more  JCO 2007»
13 years 4 months ago
Restricted domination parameters in graphs
In a graph G, a vertex dominates itself and its neighbors. A subset S ⊆ V (G) is an m-tuple dominating set if S dominates every vertex of G at least m times, and an m-dominating...
Wayne Goddard, Michael A. Henning
GC
2007
Springer
13 years 4 months ago
Subdivision Extendibility
Let H be a multigraph and G a graph containing a subgraph isomorphic to a subdivision of H, with S ⊂ V (G) (the ground set) the image of V (H) under the isomorphism. We consider...
Ronald J. Gould, Thor Whalen