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  1. Graph theory: adjacency vs incident - Mathematics Stack Exchange

    Usually one speaks of adjacent vertices, but of incident edges. Two vertices are called adjacent if they are connected by an edge. Two edges are called incident, if they share a vertex. Also, a …

  2. How do you find the area of a parallelogram with the vertices?

    Oct 13, 2016 · How do you find the area of a parallelogram with the vertices? [closed] Ask Question Asked 8 years, 9 months ago Modified 6 years, 6 months ago

  3. Proving that the number of vertices of odd degree in any graph G …

    I'm having a bit of a trouble with the below question Given G G is an undirected graph, the degree of a vertex v v, denoted by deg(v) d e g (v), in graph G G is the number of neighbors of v v. …

  4. How many nonisomorphic directed simple graphs are there with

    Is a set of vertices all isolated included? (some solutions say yes, but how can it then be called 'directed?') The n n -vertex null digraph (i.e. n n vertices and no edges) is consistently …

  5. Vertices of an equilateral triangle - Mathematics Stack Exchange

    Oct 9, 2013 · Question: show that the following three points in 3D space A = <-2,4,0>, B = <1,2,-1> C = <-1,1,2> form the vertices of an equilateral triangle. How do i approach this problem?

  6. How many four-vertex graphs are there up to isomorphism;

    How many fundamentally different graphs are there on four vertices? This is a question on my homework. I'm thinking that I need to exhaust all the possible variations of a graph with four …

  7. Finding number of edges given vertices and degree sequence?

    5 The sum of the vertex degree values is twice the number of edges, because each of the edges has been counted from both ends. In your case 6 6 vertices of degree 4 4 mean there are (6 × …

  8. Online tool for making graphs (vertices and edges)?

    Dec 11, 2010 · Anyone know of an online tool available for making graphs (as in graph theory - consisting of edges and vertices)? I have about 36 vertices and even more edges that I wish to …

  9. geometry - Spherical coordinates of a regular dodecahedron ...

    Sep 16, 2020 · The dodecahedron's vertices are partitioned into 4 groups of 5, each of which forms a regular pentagon. We have two pentagonal faces, whose edges are the edges of the …

  10. Find the number of isomorphism classes of connected graphs of …

    Oct 14, 2017 · Instead, just try to find a family of graphs (connected ones, with maximum degree 3 3) on an arbitrary number of vertices where you can make exponentially many choices: for …