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    • Finite Graphs. A graph is said to be finite if it has a finite number of vertices and a finite number of edges. A finite graph is a graph with a finite number of vertices and edges.
    • Infinite Graph: A graph is said to be infinite if it has an infinite number of vertices as well as an infinite number of edges.
    • Trivial Graph: A graph is said to be trivial if a finite graph contains only one vertex and no edge. A trivial graph is a graph with only one vertex and no edges.
    • Simple Graph: A simple graph is a graph that does not contain more than one edge between the pair of vertices. A simple railway track connecting different cities is an example of a simple graph.
  1. Aug 3, 2023 · In graph theory, a trivial graph is the simplest and most basic type of graph that exists. It consists of just one vertex (node) and no edges. This means that a trivial graph contains only a single point without any connections to other points, as there are no edges to link it to other vertices. Graph theory typically represents graphs as G (V ...

    • Directed Graph in Graph Theory
    • Undirected Graph in Graph Theory
    • Null Graph in Graph Theory
    • Trivial Graph in Graph Theory
    • Simple Graph in Graph Theory
    • Complete Graph in Graph Theory
    • Connected Graph in Graph Theory
    • Disconnected Graph in Graph Theory
    • Regular Graph in Graph Theory
    • Cyclic Graph in Graph Theory

    A graph whose all edges are directed by arrows is known as a directed graph. They are also known as digraphs. In the above image, we can see a directed graph where all the edges are directed in a certain direction.

    A graph whose edges are not directed by arrows is known as an undirected graph. In the above image, we see an undirected graph as its edges are not marked by arrows.

    A graph in which there are no edges between its vertices is known as a null graph. It is also called an empty graph. A null graph with n number of vertices is denoted by NnNn. In the above image, three different null graphs are shown.

    A graph with only one vertex is known as a trivial graph. In the above image, we see only one node and edges arising from it, thus it is a trivial graph.

    A graph that is undirected and has no parallel edges orloopsis known as a simple graph. A simple graph with nvertices has the degree of every vertex is at most n-1. In the above image, we can see the difference between a simple and not a simple graph.

    A graph in which every pair of vertices is joined by only one edge is called a completegraph. It contains all the possible edges. A complete graph with n number of vertices contains exactly nC2nC2 edges and is represented by KnKn. In the above image we see that each vertex in the graph is connected with all the remaining vertices through exactly on...

    A connected graph is a graph where we can visit from any one vertex to any other vertex. In a connected graph, there is at least one edge or path that exists between every pair of vertices. In the above image we can traverse from any one vertex to any other vertex; it is a connected graph.

    A disconnected graph is a graph in which no path exists between every pair of vertices. In the above image we see disconnected graphs.

    A Regular graph is a graph in which the degree of all the vertices is the same. If the degree of all the vertices is k, then it is called a k-regular graph. In the above image all the vertices have degree 2 and thus it is a 2-regular graph.

    A graph with n vertices and n edges forming a cycle of nwith all its edges is known as cycle graph. Any graph containing at least one cycle in it is known as a cyclic graph. In the above image the graph contains two cycles in it hence it is a cyclic graph.

  2. Aug 5, 2024 · Trivial Graph. A trivial graph is the simplest type of graph, consisting of exactly one vertex and no edges. Consider a trivial graph with one vertices: Vertex set V: {A} Edge set E: { } or ϕ; Simple Graph. A simple graph is a type of graph in which each pair of vertices is connected by at most one edge, and no vertex has an edge to itself.

  3. Jul 11, 2023 · Abstract. This chapter is intended as an introduction to the definitions and theorems most commonly used in the applied contexts of graph theory and briefly dwells on the concepts and methods of spectral graph analysis. The chapter then mentions and briefly describes the main measures of node and edge centrality.

  4. Theorem 1. A graph G(n, p) will almost surely be connected if p>((1+e)ln(n))/n. Similarly, a graph G(n, p) will almost surely be disconnected if p<((1-e)ln(n))/n. Relating our graph back to the social networks, we can measure the probability of friendships and social connections. Say two people randomly meet and become acquainted. The ...

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  6. Drawing graphs and charts. When drawing a chart or a graph, the independent variable goes on the horizontal (x) axis and the dependent variable goes on the vertical (y) axis. Once this has been ...

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