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  2. Fractional coloring - Wikipedia

    en.wikipedia.org/wiki/Fractional_coloring

    Fractional coloring is a topic in a young branch of graph theory known as fractional graph theory. It is a generalization of ordinary graph coloring. In a traditional graph coloring, each vertex in a graph is assigned some color, and adjacent vertices โ€” those connected by edges โ€” must be assigned different colors.

  3. Greedy coloring - Wikipedia

    en.wikipedia.org/wiki/Greedy_coloring

    Greedy coloring. Two greedy colorings of the same crown graph using different vertex orders. The right example generalises to 2-colorable graphs with n vertices, where the greedy algorithm expends n/2 colors. In the study of graph coloring problems in mathematics and computer science, a greedy coloring or sequential coloring[ 1] is a coloring ...

  4. The Mathematical Coloring Book - Wikipedia

    en.wikipedia.org/wiki/The_Mathematical_Coloring_Book

    The Mathematical Coloring Book: Mathematics of Coloring and the Colorful Life of Its Creators is a book on graph coloring, Ramsey theory, and the history of development of these areas, concentrating in particular on the Hadwigerโ€“Nelson problem and on the biography of Bartel Leendert van der Waerden. It was written by Alexander Soifer and ...

  5. Domain coloring - Wikipedia

    en.wikipedia.org/wiki/Domain_coloring

    Domain coloring plot of the function f(x) = โ  (x2 โˆ’ 1) (x โˆ’ 2 โˆ’ i) 2 x2 + 2 + 2 iโ , using the structured color function described below. In complex analysis, domain coloring or a color wheel graph is a technique for visualizing complex functions by assigning a color to each point of the complex plane. By assigning points on the ...

  6. Graph coloring - Wikipedia

    en.wikipedia.org/wiki/Graph_coloring

    A proper vertex coloring of the Petersen graph with 3 colors, the minimum number possible. In graph theory, graph coloring is a special case of graph labeling; it is an assignment of labels traditionally called "colors" to elements of a graph subject to certain constraints. In its simplest form, it is a way of coloring the vertices of a graph ...

  7. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a / b or โ  โ , where a and b are both integers. [9] As with other fractions, the denominator (b) cannot be zero. Examples include โ  1 2 โ , โˆ’ โ  8 5 โ , โ  โˆ’8 5 โ , and โ  8 โˆ’5 โ .

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