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  2. Circular coloring - Wikipedia

    en.wikipedia.org/wiki/Circular_coloring

    In graph theory, circular coloring is a kind of coloring that may be viewed as a refinement of the usual graph coloring. The circular chromatic number of a graph G {\displaystyle G} , denoted χ c ( G ) {\displaystyle \chi _{c}(G)} can be given by any of the following definitions, all of which are equivalent (for finite graphs).

  3. 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 7 January 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 ...

  4. Color wheel - Wikipedia

    en.wikipedia.org/wiki/Color_wheel

    A color wheel or color circle [1] is an abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc. Some sources use the terms color wheel and color circle interchangeably; [ 2 ] [ 3 ] however, one term or the other may be more prevalent in ...

  5. Color (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Color_(disambiguation)

    Color wheel or color circle, a logical arrangement of colors around a circle for artistic or scientific purposes Color, in typography , the overall density and balance between white space and print in a page layout

  6. Category:NP-complete problems - Wikipedia

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

    Complete coloring; Connected dominating set; ... Polygon-circle graph; ... This page was last edited on 12 July 2024, ...

  7. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    Coloring the edges of the Petersen graph with three colors. [5] Seven Bridges of Königsberg – Walk through a city while crossing each of seven bridges exactly once. [6] Squaring the circle, the impossible problem of constructing a square with the same area as a given circle, using only a compass and straightedge. [7]

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    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  9. Activity book - Wikipedia

    en.wikipedia.org/wiki/Activity_book

    Example of an activity book. An activity book is a type of book, generally aimed at children, which contains interactive content such as games, puzzles, quizzes, pictures to colour and other elements that involve writing or drawing in the book itself.