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Graph coloring
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=== Other colorings === {{Col-begin}} {{Col-break}} ; [[Adjacent-vertex-distinguishing-total coloring]] : A total coloring with the additional restriction that any two adjacent vertices have different color sets ; [[Acyclic coloring]] : Every 2-chromatic subgraph is acyclic ; [[B-coloring]] : a coloring of the vertices where each color class contains a vertex that has a neighbor in all other color classes. ; Bounded Coloring : a coloring in which the number of vertices per color is bounded ; [[Circular coloring]] : Motivated by task systems in which production proceeds in a cyclic way ; [[Cocoloring]] : An improper vertex coloring where every color class induces an independent set or a clique ; [[Complete coloring]] : Every pair of colors appears on at least one edge ; [[Defective coloring]] : An improper vertex coloring where every color class induces a bounded degree subgraph. ; [[Distinguishing coloring]] : An improper vertex coloring that destroys all the symmetries of the graph ; [[Equitable coloring]] : The sizes of color classes differ by at most one ; [[Exact coloring]] : Every pair of colors appears on exactly one edge ; [[Fractional coloring]] : Vertices may have multiple colors, and on each edge the sum of the color parts of each vertex is not greater than one ; [[Hamiltonian coloring]] : Uses the length of the longest path between two vertices, also known as the detour distance ; [[Harmonious coloring]] : Every pair of colors appears on at most one edge ; [[Incidence coloring]]: Each adjacent incidence of vertex and edge is colored with distinct colors ; [[Perfect matching#Connection to Graph Coloring|Inherited vertex coloring]] : A set of vertex colorings induced by perfect matchings of [[Edge_coloring|edge-colored Graphs]]. {{Col-break}} ; [[Interval edge coloring]] : A color of edges meeting in a common vertex must be contiguous ; [[List coloring]]: Each vertex chooses from a list of colors ; [[List edge-coloring]]:Each edge chooses from a list of colors ; [[L(h, k)-coloring|L(''h'', ''k'')-coloring]]: Difference of colors at adjacent vertices is at least ''h'' and difference of colors of vertices at a distance two is at least ''k''. A particular case is [[L(2,1)-coloring]]. ; [[Oriented coloring]] : Takes into account orientation of edges of the graph ; [[Path coloring]] : Models a routing problem in graphs ; [[Radio coloring]] : Sum of the distance between the vertices and the difference of their colors is greater than ''k'' + 1, where ''k'' is a positive integer. ; [[Rank coloring]] : If two vertices have the same color ''i'', then every path between them contain a vertex with color greater than ''i'' ; [[Subcoloring]] : An improper vertex coloring where every color class induces a union of cliques ; [[Sum coloring]] : The criterion of minimalization is the sum of colors ; [[Star coloring]] : Every 2-chromatic subgraph is a disjoint collection of [[star (graph theory)|stars]] ; [[Strong coloring]] : Every color appears in every partition of equal size exactly once ; [[Strong edge coloring]] : Edges are colored such that each color class induces a matching (equivalent to coloring the square of the line graph) ; [[T-coloring|''T''-coloring]] : Absolute value of the difference between two colors of adjacent vertices must not belong to fixed set ''T'' ; [[Total coloring]] :Vertices and edges are colored ; [[Tree-depth|Centered coloring]]: Every connected [[induced subgraph]] has a color that is used exactly once ; [[Monochromatic triangle|Triangle-free edge coloring]]: The edges are colored so that each color class forms a [[triangle-free graph|triangle-free]] subgraph ; [[Weak coloring]] : An improper vertex coloring where every non-isolated node has at least one neighbor with a different color {{col-end}} Coloring can also be considered for [[signed graph]]s and [[gain graph]]s.
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