𝔖 Bobbio Scriptorium
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A polyhedron of genus 4 with minimal number of vertices and maximal symmetry

✍ Scribed by Jürgen Bokowski; Ulrich Brehm

Publisher
Springer
Year
1989
Tongue
English
Weight
499 KB
Volume
29
Category
Article
ISSN
0046-5755

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📜 SIMILAR VOLUMES

Unicyclic graphs with given number of pe
Unicyclic graphs with given number of pendent vertices and minimal energy
✍ Hongbo Hua; Maolin Wang 📂 Article 📅 2007 🏛 Elsevier Science 🌐 English ⚖ 196 KB

The energy of a graph G, denoted by E(G), is defined to be the sum of absolute values of all eigenvalues of the adjacency matrix of G. Let G(n, l, p) denote the set of all unicyclic graphs on n vertices with girth and pendent vertices being l ( 3) and p ( 1), respectively. More recently, one of the

On the number of cycles of length 4 in a
On the number of cycles of length 4 in a maximal planar graph
✍ Ahmad Fawzi Alameddine 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 148 KB 👁 2 views

## Abstract Let __p__ and __C__~4~ (__G__) be the number of vertices and the number of 4‐cycles of a maximal planar graph __G__, respectively. Hakimi and Schmeichel characterized those graphs __G__ for which __C__~4~ (__G__) = 1/2(__p__^2^ + 3__p__ ‐ 22). This characterization is correct if __p__ ≥