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  2. Glossary of graph theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_graph_theory

    A k-cycle is a cycle of length k; for instance a 2-cycle is a digon and a 3-cycle is a triangle. A cycle graph is a graph that is itself a simple cycle; a cycle graph with n vertices is commonly denoted C n. 2. The cycle space is a vector space generated by the simple cycles in a graph, often over the field of 2 elements but also over other fields.

  3. Cycle (graph theory) - Wikipedia

    en.wikipedia.org/wiki/Cycle_(graph_theory)

    In graph theory, a cycle in a graph is a non-empty trail in which only the first and last vertices are equal. A directed cycle in a directed graph is a non-empty directed trail in which only the first and last vertices are equal. A graph without cycles is called an acyclic graph. A directed graph without directed cycles is called a directed ...

  4. Stars and bars (combinatorics) - Wikipedia

    en.wikipedia.org/wiki/Stars_and_bars_(combinatorics)

    The configuration will be specified by indicating the boundary between the first and second bin, the boundary between the second and third bin, and so on. Hence k − 1 bars need to be placed between stars. Because no bin is allowed to be empty, there is at most one bar between any pair of stars.

  5. Cyclic (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Cyclic_(mathematics)

    Graph theory: Cyclic function, a periodic function Cycle graph, a connected, 2-regular graph; Cycle graph (algebra), a diagram representing the cycles determined by taking powers of group elements; Circulant graph, a graph with cyclic symmetry; Cycle (graph theory), a nontrivial path in some graph from a node to itself; Cyclic graph, a graph ...

  6. Bar chart - Wikipedia

    en.wikipedia.org/wiki/Bar_chart

    A bar chart or bar graph is a chart or graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. A vertical bar chart is sometimes called a column chart and has been identified as the prototype of charts. [1] A bar graph ...

  7. Graph (discrete mathematics) - Wikipedia

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

    A path graph or linear graph of order n ≥ 2 is a graph in which the vertices can be listed in an order v 1, v 2, …, v n such that the edges are the {v i, v i+1} where i = 1, 2, …, n − 1. Path graphs can be characterized as connected graphs in which the degree of all but two vertices is 2 and the degree of the two remaining vertices is 1.

  8. Bipartite graph - Wikipedia

    en.wikipedia.org/wiki/Bipartite_graph

    A graph with an odd cycle transversal of size 2: removing the two blue bottom vertices leaves a bipartite graph. Odd cycle transversal is an NP-complete algorithmic problem that asks, given a graph G = (V,E) and a number k, whether there exists a set of k vertices whose removal from G would cause the resulting graph to be bipartite. [31]

  9. Data and information visualization - Wikipedia

    en.wikipedia.org/wiki/Data_and_information...

    A bar chart may be used to show the comparison across the sales persons. Part-to-whole: Categorical subdivisions are measured as a ratio to the whole (i.e., a percentage out of 100%). A pie chart or bar chart can show the comparison of ratios, such as the market share represented by competitors in a market.

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