Suppose a tree graph T with $n\ge 4$ ,and 3 edges $e_1,e_2,e_3$ from its complement tree graph T-.Show that $G = T + e_1 + e_2 +e_3$ is a planar graph

score 43 · Answer 8 · 2023-06-18 19:19:00

43

Views

Generalization of Triangulations in Graph Theory

Published on 18 Jun 2023 - 19:19

score 61 · Answer 9 · 2023-06-19 17:39:08

61

Views

For what values of $n$ $(n\ge 3)$ is the graph $C_n \times P_n$ planar?

Published on 19 Jun 2023 - 17:39

score 259 · Answer 10 · 2023-06-25 16:14:57

259

Views

4-color coloring game.

Published on 25 Jun 2023 - 16:14

score 32 · Answer 11 · 2026-03-25 08:07:15

32

Views

Structural characterizations of planar graphs

Published on 25 Mar 2026 - 8:07

score 20 · Answer 12 · 2023-06-29 15:02:24

20

Views

Are Apex graphs always Toroidal?

Published on 29 Jun 2023 - 15:02

score 26 · Answer 13 · 2023-07-01 19:50:19

26

Views

Number of vertices in spherical embeddings with large stars.

Published on 01 Jul 2023 - 19:50

score 60 · Answer 14 · 2023-07-14 02:59:53

60

Views

Bound number of loopless multigraphs

Published on 14 Jul 2023 - 2:59

score 50 · Answer 15 · 2023-07-18 02:43:46

50

Views

A graph coloring game of merging subgraphs

Published on 18 Jul 2023 - 2:43

List Question

Asymmetric graphs with asymmetric edge-deleted subgraphs

Could there exist a planar graph with the following degrees of vertices: {5, 5, 4, 4, 4, 2}

e <= 3v - 6 for planar graph question: why does every face (of a planar graph) have to have at least three sides?

Construct a class of maximal planar graphs with exactly 4 vertices of degree 3.

Related between Kuratowski theorem and any graphs that $\chi(G)\leq 4$ and $\chi(G)\leq 5$

Showing inequality about number of vertices with ceratin degree for planar graphs

Suppose a tree graph T with $n\ge 4$ ,and 3 edges $e_1,e_2,e_3$ from its complement tree graph T-.Show that $G = T + e_1 + e_2 +e_3$ is a planar graph

Generalization of Triangulations in Graph Theory

For what values of $n$ $(n\ge 3)$ is the graph $C_n \times P_n$ planar?

4-color coloring game.

Structural characterizations of planar graphs

Are Apex graphs always Toroidal?

Number of vertices in spherical embeddings with large stars.

Bound number of loopless multigraphs

A graph coloring game of merging subgraphs

Trending Questions

Popular # Hahtags

Popular Questions