𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The number of edges of radius-invariant graphs

✍ Scribed by Ondrej Vacek


Book ID
111493009
Publisher
SP Versita
Year
2009
Tongue
English
Weight
385 KB
Volume
59
Category
Article
ISSN
0139-9918

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Saturated graphs with minimal number of
✍ L. KΓ‘szonyi; Zs. Tuza πŸ“‚ Article πŸ“… 1986 πŸ› John Wiley and Sons 🌐 English βš– 286 KB

Let F = {F,, . . .} be a given class of forbidden graphs. A graph G is called F-saturated if no F, E F is a subgraph of G but the addition of an arbitrary new edge gives a forbidden subgraph. In this paper the minimal number of edges in F-saturated graphs is examined. General estimations are given a

Number of edges in degree-magic graphs
✍ BezegovΓ‘, L’udmila; Ivančo, Jaroslav πŸ“‚ Article πŸ“… 2013 πŸ› Elsevier Science 🌐 English βš– 462 KB
On the Number of Edges of Quadrilateral-
✍ ZoltΓ‘n FΓΌredi πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 247 KB

If a graph has q 2 +q+1 vertices (q>13), e edges and no 4-cycles then e 1 2 q(q+1) 2 . Equality holds for graphs obtained from finite projective planes with polarities. This partly answers a question of Erdo s from the 1930's. 1996 Academic Press, Inc. ## 1. Results Let f (n) denote the maximum n