• Thumbnail for Circular-arc graph
    In graph theory, a circular-arc graph is the intersection graph of a set of arcs on the circle. It has one vertex for each arc in the set, and an edge...
    7 KB (866 words) - 16:43, 16 October 2023
  • Thumbnail for Circular arc
    A circular arc is the arc of a circle between a pair of distinct points. If the two points are not directly opposite each other, one of these arcs, the...
    6 KB (926 words) - 23:14, 1 April 2024
  • graph (a coloring) that assigns different colors to the endpoints of each edge; see color. 3.  A proper interval graph or proper circular arc graph is...
    109 KB (16,011 words) - 12:09, 30 June 2025
  • Thumbnail for Circle graph
    Kratsch, D.; Wong, C. K. (1998), "Minimum fill-in on circle and circular-arc graphs", Journal of Algorithms, 28 (2): 272–289, doi:10.1006/jagm.1998.0936...
    15 KB (1,694 words) - 07:51, 18 July 2024
  • Thumbnail for Directed acyclic graph
    called arcs), with each edge directed from one vertex to another, such that following those directions will never form a closed loop. A directed graph is...
    45 KB (5,646 words) - 17:54, 7 June 2025
  • Thumbnail for Intersection graph
    intervals on the real line A circular arc graph is defined as the intersection graph of arcs on a circle. A polygon-circle graph is defined as the intersection...
    9 KB (1,144 words) - 23:24, 9 February 2024
  • Thumbnail for Cycle graph
    In graph theory, a cycle graph or circular graph is a graph that consists of a single cycle, or in other words, some number of vertices (at least 3, if...
    5 KB (518 words) - 00:45, 8 October 2024
  • Thumbnail for Graph homomorphism
    In the mathematical field of graph theory, a graph homomorphism is a mapping between two graphs that respects their structure. More concretely, it is a...
    38 KB (4,860 words) - 20:28, 9 May 2025
  • Longest path problem (category Graph algorithms)
    classes of circular-arc graphs and of co-comparability graphs (i.e. of the complements of comparability graphs, which also contain permutation graphs), both...
    22 KB (2,662 words) - 06:47, 12 May 2025
  • Thumbnail for Interval graph
    of the interval graphs is G {\displaystyle G} . The intersection graphs of arcs of a circle form circular-arc graphs, a class of graphs that contains the...
    22 KB (2,640 words) - 01:39, 27 August 2024
  • Thumbnail for Claw-free graph
    The same is true more generally for proper circular-arc graphs. The Moser spindle, a seven-vertex graph used to provide a lower bound for the chromatic...
    29 KB (3,914 words) - 15:45, 10 July 2025
  • Thumbnail for Circular layout
    In graph drawing, a circular layout is a style of drawing that places the vertices of a graph on a circle, often evenly spaced so that they form the vertices...
    17 KB (1,818 words) - 02:14, 5 November 2023
  • Thumbnail for Intersection number (graph theory)
    to find the intersection number in linear time in circular-arc graphs. However, although these graphs have only a polynomial number of cliques to choose...
    35 KB (4,363 words) - 13:40, 25 February 2025
  • Thumbnail for Trapezoid graph
    They are a superclass of the trapezoid graph class, and also contain circle graphs and circular-arc graphs. A circle trapezoid is the region in a circle...
    10 KB (1,528 words) - 07:40, 27 June 2022
  • Thumbnail for Inverse trigonometric functions
    correspond to an arc whose length is rθ, where r is the radius of the circle. Thus in the unit circle, the cosine of x function is both the arc and the angle...
    75 KB (10,633 words) - 05:07, 12 July 2025
  • Look up arc, arc-, or arcs in Wiktionary, the free dictionary. Arc may refer to: Arc (geometry), a segment of a differentiable curve Circular arc, a segment...
    7 KB (965 words) - 18:14, 6 May 2025
  • Thumbnail for Graph drawing
    Graph drawing is an area of mathematics and computer science combining methods from geometric graph theory and information visualization to derive two-dimensional...
    33 KB (3,554 words) - 05:14, 15 July 2025
  • Thumbnail for Angular resolution (graph drawing)
    drawings of graphs, later authors have also investigated the angular resolution of drawings in which the edges are polygonal chains, circular arcs, or spline...
    15 KB (1,665 words) - 18:44, 10 January 2025
  • Thumbnail for Graph (discrete mathematics)
    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...
    28 KB (3,671 words) - 04:30, 15 May 2025
  • Thumbnail for Arc length
    Arc length is the distance between two points along a section of a curve. Development of a formulation of arc length suitable for applications to mathematics...
    29 KB (5,339 words) - 08:06, 22 May 2025
  • Thumbnail for Force-directed graph drawing
    Force-directed graph drawing algorithms are a class of algorithms for drawing graphs in an aesthetically-pleasing way. Their purpose is to position the...
    17 KB (2,224 words) - 15:07, 9 June 2025
  • Thumbnail for Perfect graph
    triangulated graphs, comparability graphs, proper interval graphs, proper circular-arc graphs, and nested interval graphs". Journal of Graph Theory. 6 (3):...
    59 KB (7,055 words) - 07:30, 25 February 2025
  • Thumbnail for Chord (geometry)
    of a circle is a straight line segment whose endpoints both lie on a circular arc. If a chord were to be extended infinitely on both directions into a...
    6 KB (740 words) - 00:27, 8 May 2025
  • penny graphs. Representations as contact graphs of triangles, rectangles, squares, line segments, or circular arcs have also been studied. Chaplick, Steven;...
    5 KB (483 words) - 22:17, 27 February 2025
  • Thumbnail for Maximal independent set
    Maximal independent set (category Graph theory objects)
    algorithms for generating all maximal independent sets of interval, circular-arc and chordal graphs", Journal of Algorithms, 5: 22–35, doi:10.1016/0196-6774(84)90037-3...
    40 KB (5,451 words) - 01:27, 25 June 2025
  • Thumbnail for Inverse hyperbolic functions
    way circular angle measure is the arc length of an arc of the unit circle in the Euclidean plane or twice the area of the corresponding circular sector...
    27 KB (4,189 words) - 19:04, 25 May 2025
  • Thumbnail for Truncated cube
    not areas or lengths. Straight lines on the sphere are projected as circular arcs on the plane. Cartesian coordinates for the vertices of a truncated...
    9 KB (738 words) - 06:27, 6 March 2025
  • Thumbnail for Leaf power
    Leaf power (category Graph families)
    030. Raychaudhuri, A. (1992), "On powers of strongly chordal graphs and circular arc graphs", Ars Combinatoria, 34: 147–160. Eppstein, D.; Havvaei, H. (2020)...
    11 KB (1,084 words) - 09:49, 5 January 2024
  • Thumbnail for Arc diagram
    An arc diagram is a style of graph drawing, in which the vertices of a graph are placed along a line in the Euclidean plane and edges are drawn using...
    22 KB (2,597 words) - 02:23, 31 March 2025
  • Thumbnail for Lens (geometry)
    Lens (geometry) (category Piecewise-circular curves)
    convex region bounded by two circular arcs joined to each other at their endpoints. In order for this shape to be convex, both arcs must bow outwards (convex-convex)...
    7 KB (1,004 words) - 16:54, 16 May 2025