## Abstract For each pair __s,t__ of natural numbers there exist natural numbers __f(s,t)__ and __g(s,t)__ such that the vertex set of each graph of connectivity at least __f(s,t)__ (respectively minimum degree at least __g(s,t))__ has a decomposition into sets which induce subgraphs of connectivit
Graph decomposition with constraints on the minimum degree
β Scribed by John Sheehan
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 888 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
Let G be a finite simple graph on n vertices with minimum degree 6(G) 3 6 (n = 6 (mod 2)). Let max(k, G) denote the set of all k-subsets A E V(G) such that the number of edges in the induced subgraph (A) is a maximum. We prove that for some i E (0, 1.2, . . . ). Analogous edge density constraints, rather than constraints on the minimum degree of G, guaranteeing such a partition are also discussed.
, [$d] ) there exists a partition (X, Y) of V(G) such that (i) (X) = [$nl +i, lYl= [$nj -i; (ii) 6(X) 3 [$Sl + i, 6(Y) 5 l;Sj -i; (iii) X E max( [in1 + i, G) or Y E max(
π SIMILAR VOLUMES
Sheehan, J., Balanced graphs with minimum degree constraints, Discrete Mathematics 102 (1992) 307-314. Let G be a finite simple graph on n vertices with minimum degree 6 = 6(G) (n = 6 (mod 2)). Suppose that 0 < 6 c n -2, 06 i 4 [?Sl. A partition (x, Y) of V(G) is said to be an (i, a)-partition of G
## Abstract We show that the vertex set of any graph __G__ with __p__β©Ύ2 vertices can be partitioned into nonβempty sets __V__~1~, __V__~2~, such that the maximum degree of the induced subgraph γ__V__~i~γ does not exceed where p^i^ = |__V__^i^|, for __i__=1, 2. Furthermore, the structure of the in
We prove that if s and t are positive integers and if G is a triangle-free graph with minimum degree s + t, then the vertex set of G has a decomposition into two sets which induce subgraphs of minimum degree at least s and t, respectively.
## Abstract Let __G__ = __(A, B; E)__ be a bipartite graph. Let __e__~1~, __e__~2~ be nonnegative integers, and __f__~1~, __f__~2~ nonnegative integerβvalued functions on __V(G)__ such that __e__~__i__~ β¦ |__E__| β¦ __e__~1~ + __e__~2~ and __f~i~(v)__ β¦ __d(v)__ β¦ __f__~1~__(v)__ + __f__~2~__(v)__ f
It was proved by Chartrand f hat if G is a graph of order p for which the minimum degree is at least [&I, then the edge-connectivity of G equals the minimum degree of G. It is shown here that one may allow vertices of degree less than $p and still obtain the same conclusion, provided the degrees are