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  2. Graph of a function - Wikipedia

    en.wikipedia.org/wiki/Graph_of_a_function

    In mathematics, the graph of a function is the set of ordered pairs , where In the common case where and are real numbers, these pairs are Cartesian coordinates of points in a plane and often form a curve. The graphical representation of the graph of a function is also known as a plot. In the case of functions of two variables – that is ...

  3. Graph (discrete mathematics) - Wikipedia

    en.wikipedia.org/wiki/Graph_(discrete_mathematics)

    A graph with six vertices and seven edges. In discrete mathematics, particularly in graph theory, a graph is a structure consisting of a set of objects where some pairs of the objects are in some sense "related". The objects are represented by abstractions called vertices (also called nodes or points) and each of the related pairs of vertices ...

  4. Graph theory - Wikipedia

    en.wikipedia.org/wiki/Graph_theory

    Graph theory. A drawing of a graph with 6 vertices and 7 edges. In mathematics and computer science, graph theory is the study of graphs, which are mathematical structures used to model pairwise relations between objects.

  5. Farey sequence - Wikipedia

    en.wikipedia.org/wiki/Farey_sequence

    In mathematics, the Farey sequence of order n is the sequence of completely reduced fractions, either between 0 and 1, or without this restriction, [a] which when in lowest terms have denominators less than or equal to n, arranged in order of increasing size. With the restricted definition, each Farey sequence starts with the value 0, denoted ...

  6. Fractional coloring - Wikipedia

    en.wikipedia.org/wiki/Fractional_coloring

    Fractional coloring is a topic in a young branch of graph theory known as fractional graph theory. It is a generalization of ordinary graph coloring. In a traditional graph coloring, each vertex in a graph is assigned some color, and adjacent vertices — those connected by edges — must be assigned different colors.

  7. Fractional matching - Wikipedia

    en.wikipedia.org/wiki/Fractional_matching

    Definition. Given a graph G = (V, E), a fractional matching in G is a function that assigns, to each edge e in E, a fraction f (e) in [0, 1], such that for every vertex v in V, the sum of fractions of edges adjacent to v is at most 1: [1] A matching in the traditional sense is a special case of a fractional matching, in which the fraction of ...

  8. Fractional part - Wikipedia

    en.wikipedia.org/wiki/Fractional_part

    Graph of the fractional part of real numbers The fractional part or decimal part [ 1 ] of a non‐negative real number x {\displaystyle x} is the excess beyond that number's integer part . The latter is defined as the largest integer not greater than x , called floor of x or ⌊ x ⌋ {\displaystyle \lfloor x\rfloor } .

  9. Quotient graph - Wikipedia

    en.wikipedia.org/wiki/Quotient_graph

    Quotient graph. In graph theory, a quotient graph Q of a graph G is a graph whose vertices are blocks of a partition of the vertices of G and where block B is adjacent to block C if some vertex in B is adjacent to some vertex in C with respect to the edge set of G. [1] In other words, if G has edge set E and vertex set V and R is the ...

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