Combinatorics and Graph Theory

1001 Submissions

[3] viXra:1001.0031 [pdf] submitted on 22 Jan 2010

Threeconnected Graphs with Only One Hamiltonian Circuit

Authors: Dainis Zeps, Emanuels Grinbergs
Comments: 6 pages

We will call graph 1-H-graph if it is threeconnected and it has only one Hamiltonian circuit
Category: Combinatorics and Graph Theory

[2] viXra:1001.0030 [pdf] submitted on 22 Jan 2010

Combinatorial Maps

Authors: Dainis Zeps
Comments: 61 pages

Tutorial
Category: Combinatorics and Graph Theory

[1] viXra:1001.0029 [pdf] submitted on 22 Jan 2010

4-Critical Wheel Graphs of Higher Order

Authors: Dainis Zeps
Comments: 4 pages

4-critical wheel graphs of higher order are considered concerning their belonging to free-planar or free-Hadwiger classes.
Category: Combinatorics and Graph Theory