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- Martin Charles Golumbic, Robert E. Jamison
- Discrete Mathematics
- 1985

- Martin Charles Golumbic, Robert E. Jamison
- J. Comb. Theory, Ser. B
- 1985

We consider a generalization of edge intersection graphs of paths in a tree. Let P be a collection of nontrivial simple paths in a tree T. We define the k-edge (k 1) intersection graph k (P), whose vertices correspond to the members of P, and two vertices are joined by an edge if the corresponding members of P share k edges in T. An undirected graph G is… (More)

- Robert E. Jamison
- J. Comb. Theory, Ser. A
- 1977

- Martin Farber, Robert E. Jamison
- Discrete Mathematics
- 1987

A set K of nodes of a graph G is geodesically convex (respectively, monophonically convex) if K contains every node on every shortest (respectively, chordless) path joining nodes in K. We investigate the classes of graphs which are characterized by certain local convexity conditions with respect to geodesic convexity, in particular, those graphs in which… (More)

- Michael O. Albertson, Robert E. Jamison, Stephen T. Hedetniemi, Stephen C. Locke
- Discrete Mathematics
- 1989

The subchromatic number χ S (G) of a graph G = (V, E) is the smallest order k of a partition {V 1 , V 2 ,. .. , V k } of the vertices V (G) such that the subgaph < V i > induced by each subset V i consisits of a disjoint union of complete subgraphs. By definition, χ S (G) ≤ χ(G), the chromatic number of G. This paper develops properties of this lower bound… (More)

- Robert E. Jamison, Tao Jiang, Alan C. H. Ling
- Journal of Graph Theory
- 2003

Given two graphs G and H, let f (G,H) denote the minimum integer n such that in every coloring of the edges of K n , there is either a copy of G with all edges having the same color or a copy of H with all edges having different colors. We show that f (G,H) is finite iff G is a star or H is acyclic. If S and T are trees with s and t edges, respectively, we… (More)

- Robert E. Jamison
- J. Comb. Theory, Ser. B
- 1983

- Robert E. Jamison
- Discrete Mathematics
- 1987

- Robert E. Jamison
- Discrete Mathematics
- 1986

- David Pokrass Jacobs, Robert E. Jamison
- Discrete Mathematics
- 2001