coloring

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coloring

[′kəl·ər·iŋ]
(mathematics)
An assignment of colors to the vertices of a graph so that adjacent vertices are assigned different colors.
References in classic literature ?
He went down, stepping softly, and surprised his wife in her studio, coloring engravings.
Yes, I'm writing the second part of the Two Elements," said Golenishtchev, coloring with pleasure at the question--"that is, to be exact, I am not writing it yet; I am preparing, collecting materials.
Yes," said Philip, coloring deeply; "don't you love yours?
Oh yes--I only wanted to know," said Tom, rather ashamed of himself, now he saw Philip coloring and looking uncomfortable.
Some new colorings of graphs are produced from applied areas of computer science, information science and light transmission, such as vertex distinguishing proper edge coloring [1], adjacent vertex distinguishing proper edge coloring [2] and adjacent vertex distinguishing total coloring [3, 4] and so on, those problems are very difficult.
Dear EarthTalk: Ever since the red dye #2 scare in the 1970s I've been wary of using food colorings or buying food that appears to contain them.
Previously, these colorings derived from female cochineal beetles could be declared on a label under a generic "color added" label or something similar.
Later chapters deal with graph colorings, with material on vertex colorings and bounds for the chromatic number, vertex colorings of graphs embedded on surfaces, and a variety of restricted vertex colorings.
The EFSA plans to review 45 colorings currently used in Europe by the end of 2008, and will rule on the coloring Allura Red later in the year.
Food colorings are used to replace real food, like fruit," Jacobson says.
For Frosting, in a medium mixing bowl, combine frosting, food colorings, orange extract and sifted powdered sugar until well blended.
Asthma and Allergy Research Center studied the impact of artificial colorings on 277 three-year-olds over a two-week period.