Plots Edges

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Edges

Edges (sometimes produced as Edges: A Song Cycle) is a work of musical theatre by Pasek & Paul. It is a song cycle about coming of age, growth and self-discovery 1 of people mostly in their 20s. Its most famous song, 'Be My Friend', has come to be commonly known as the 'Facebook song'. Definition − A graph (denoted as G = (V, E)) consists of a non-empty set of vertices or nodes V and a set of edges E. A vertex a represents an endpoint of an edge. An edge joins two vertices a, b and is represented by set of vertices it connects.

Plots edges definition
MathematicsComputer EngineeringMCA

A graph is a set of points, called nodes or vertices, which are interconnected by a set of lines called edges. The study of graphs, or graph theory is an important part of a number of disciplines in the fields of mathematics, engineering and computer science.

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Graph Theory

Definition − A graph (denoted as G = (V, E)) consists of a non-empty set of vertices or nodes V and a set of edges E. A vertex a represents an endpoint of an edge. An edge joins two vertices a, b and is represented by set of vertices it connects.

Example − Let us consider, a Graph is G = (V, E) where V = {a, b, c, d} and E = {{a, b}, {a, c}, {b, c}, {c, d}}

Here V is verteces and a, b, c, d are various vertex of the graph.

Plots Edges

Here E represents edges and {a, b}, {a, c}, {b, c}, {c, d} are various edge of the graph.

Degree of a Vertex − The degree of a vertex V of a graph G (denoted by deg (V)) is the number of edges incident with the vertex V.

VertexDegreeEven / Odd
a2even
b2even
c3odd
d1odd

Even and Odd Vertex − If the degree of a vertex is even, the vertex is called an even vertex and if the degree of a vertex is odd, the vertex is called an odd vertex.

Plots Edges Definition

Degree of a Graph − The degree of a graph is the largest vertex degree of that graph. For the above graph the degree of the graph is 3.

Plots Edges Meaning

The Handshaking Lemma − In a graph, the sum of all the degrees of all the vertices is equal to twice the number of edges. For example, in above case, sum of all the degrees of all vertices is 8 and total edges are 4.