Show that any graph with n vertices and δ(G) ≥ n/2 + 1 has a triangle.

Expert Solution

Colby Messinger answered 3 years ago

Prove that if G is a simple graph with |V (G)| = n even, where δ(G)...

Prove that if G is a simple graph with |V (G)| = n even, where δ(G) ≥ n 2 + 1, then G has a 3-regular spanning subgraph.

An m × n grid graph has m rows of n vertices with vertices closest to...

An m × n grid graph has m rows of n vertices with vertices closest to each other connected by an edge. Find the greatest length of any path in such a graph, and provide a brief explanation as to why it is maximum. You can assume m, n ≥ 2. Please provide an explanation without using Hamilton Graph Theory.

Given a connected graph G with n vertices. We say an edge of G is a...

Given a connected graph G with n vertices. We say an edge of G is a bridge if the graph becomes a disconnected graph after removing the edge. Give an O(m + n) time algorithm that finds all the bridges. (Partial credits will be given for a polynomial time algorithm.) (Hint: Use DFS)

If graph G has n edges and k component and m vertices, so m ≥ n-k....

If graph G has n edges and k component and m vertices, so m ≥ n-k. Prove it!

If graph g has n vertices and k component and m edges, so m ≥ n-k....

If graph g has n vertices and k component and m edges, so m ≥ n-k. Prove it ! Thank you...

The vertices of a triangle determine a circle, called the circumcircle of the triangle. Show that...

The vertices of a triangle determine a circle, called the circumcircle of the triangle. Show that if P is any point on the circumcircle of a triangle, and X, Y, and Z are the feet of the perpendiculars from P to the sides of the triangle, then X, Y and Z are collinear.

let G be a simple graph. show that the relation R on the set of vertices...

let G be a simple graph. show that the relation R on the set of vertices of G such that URV if and only if there is an edge associated with (u,v) is a symmetric irreflexive relation on G

Let G be a simple undirected graph with n vertices where n is an even number....

Let G be a simple undirected graph with n vertices where n is an even number. Prove that G contains a triangle if it has at least (n^2 / 4) + 1 edges using mathematical induction.

Consider an undirected graph G that has n distinct vertices. Assume n≥3. How many distinct edges...

Consider an undirected graph G that has n distinct vertices. Assume n≥3. How many distinct edges will there be in any circuit for G that contains all the vertices in G? What is the maximum degree that any vertex in G can have? What is the maximum number of distinct edges G can have? What is the maximum number of distinct edges that G can have if G is disconnected?

Null graph,Nn, n=1,2,3,4...，the graph with n vertices and no edges. (N4=4 vertices with no edges) 4...

Null graph,Nn, n=1,2,3,4...，the graph with n vertices and no edges. (N4=4 vertices with no edges) 4 a) find a graph with 8 vertices with no 3-cycles and no induced sub graph isomorphic to N4 b)prove that every simple graph with 9 vertices with no 3-cycles has an induced sub graph isomorphic to N4

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