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  2. Circle graph - Wikipedia

    en.wikipedia.org/wiki/Circle_graph

    A circle with five chords and the corresponding circle graph. In graph theory, a circle graph is the intersection graph of a chord diagram.That is, it is an undirected graph whose vertices can be associated with a finite system of chords of a circle such that two vertices are adjacent if and only if the corresponding chords cross each other.

  3. Pie chart - Wikipedia

    en.wikipedia.org/wiki/Pie_chart

    A pie chart (or a circle chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. ... The Elements of Graphing Data ...

  4. Circular layout - Wikipedia

    en.wikipedia.org/wiki/Circular_layout

    Circular layouts are a good fit for communications network topologies such as star or ring networks, [1] and for the cyclic parts of metabolic networks. [2] For graphs with a known Hamiltonian cycle, a circular layout allows the cycle to be depicted as the circle, and in this way circular layouts form the basis of the LCF notation for Hamiltonian cubic graphs.

  5. Wikipedia:Graphs and charts - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Graphs_and_charts

    The R programming language can be used for creating Wikipedia graphs. The Google Chart API allows a variety of graphs to be created. Livegap Charts creates line, bar, spider, polar-area and pie charts, and can export them as images without needing to download any tools. Veusz is a free scientific graphing tool that can produce 2D and 3D plots ...

  6. Chord diagram (mathematics) - Wikipedia

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

    Chord diagrams are conventionally visualized by arranging the objects in their order around a circle, and drawing the pairs of the matching as chords of the circle. The number of different chord diagrams that may be given for a set of 2 n {\displaystyle 2n} cyclically ordered objects is the double factorial ( 2 n − 1 ) ! ! {\displaystyle (2n ...

  7. Glossary of graph theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_graph_theory

    5. A chord of a circle is a line segment connecting two points on the circle; the intersection graph of a collection of chords is called a circle graph. chromatic Having to do with coloring; see color. Chromatic graph theory is the theory of graph coloring. The chromatic number χ(G) is the minimum number of colors needed in a proper coloring of G.

  8. Circle - Wikipedia

    en.wikipedia.org/wiki/Circle

    The circle of radius ⁠ ⁠ with center at ⁠ (,) ⁠ in the ⁠ ⁠ – ⁠ ⁠ plane can be broken into two semicircles each of which is the graph of a function, ⁠ + ⁠ and ⁠ ⁠, respectively: + = + (), = (), for values of ⁠ ⁠ ranging from ⁠ ⁠ to ⁠ + ⁠.

  9. List of circle topics - Wikipedia

    en.wikipedia.org/wiki/List_of_circle_topics

    Casey's theorem – On four non-intersecting circles that lie inside a bigger circle and tangent to it; Circle graph – Intersection graph of a chord diagram; Circle map – Phenomenon in maths; Circle packing – Field of geometry closely arranging circles on a plane

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