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2. Rainbow coloring - Wikipedia

   en.wikipedia.org/wiki/Rainbow_coloring

   An edge coloring of is called a -rainbow coloring if for every set of vertices of , there is a rainbow tree in containing the vertices of . The k {\displaystyle k} -rainbow index rx k ( G ) {\displaystyle {\text{rx}}_{k}(G)} of G {\displaystyle G} is the minimum number of colors needed in a k {\displaystyle k} -rainbow coloring of G ...

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5. Coloring book - Wikipedia

   en.wikipedia.org/wiki/Coloring_book

   This is an accepted version of this page This is the latest accepted revision, reviewed on 23 February 2025. Book containing line art, to which the user is intended to add color For other uses, see Coloring Book (disambiguation). Filled-in child's coloring book, Garfield Goose (1953) A coloring book is a type of book containing line art to which people are intended to add color using crayons ...

6. Category:Graph coloring - Wikipedia

   en.wikipedia.org/wiki/Category:Graph_coloring

   Pages in category "Graph coloring" The following 82 pages are in this category, out of 82 total. ... Conflict-free coloring; ... Rainbow coloring;

7. ROYGBIV - Wikipedia

   en.wikipedia.org/wiki/ROYGBIV

   ROYGBIV is an acronym for the sequence of hues commonly described as making up a rainbow: red, orange, yellow, green, blue, indigo, and violet. When making an artificial rainbow, glass prism is used, but the colors of "ROY-G-BIV" are inverted to "VIB-G-YOR".

8. Rainbow-independent set - Wikipedia

   en.wikipedia.org/wiki/Rainbow-independent_set

   The set is therefore rainbow-independent in the shown graph. In graph theory , a rainbow-independent set ( ISR ) is an independent set in a graph , in which each vertex has a different color . Formally, let G = ( V , E ) be a graph, and suppose vertex set V is partitioned into m subsets V 1 , …, V m , called "colors".

9. Category:NP-complete problems - Wikipedia

   en.wikipedia.org/wiki/Category:NP-complete_problems

   Envy-free item allocation; Equitable coloring; Essential tuple normal form; Exact coloring; Exact cover; F. ... Rainbow coloring; Rainbow matching; Rainbow ...