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  2. Chegg - Wikipedia

    en.wikipedia.org/wiki/Chegg

    Chegg began trading shares publicly on the New York Stock Exchange in November 2013. [15] Its IPO was reported to have raised $187.5 million, with an initial market capitalization of about $1.1 billion. [16] In 2014, Chegg entered a partnership with book distributor Ingram Content Group to distribute all of Chegg's physical textbook rentals ...

  3. Art gallery problem - Wikipedia

    en.wikipedia.org/wiki/Art_gallery_problem

    In decision problem versions of the art gallery problem, one is given as input both a polygon and a number k, and must determine whether the polygon can be guarded with k or fewer guards. This problem is ∃ R {\displaystyle \exists \mathbb {R} } -complete , as is the version where the guards are restricted to the edges of the polygon. [ 10 ]

  4. Graph coloring - Wikipedia

    en.wikipedia.org/wiki/Graph_coloring

    The assignment is subject to certain constraints, such as that no two adjacent elements have the same color. Graph coloring is a special case of graph labeling. In its simplest form, it is a way of coloring the vertices of a graph such that no two adjacent vertices are of the same color; this is called a vertex coloring.

  5. Graph labeling - Wikipedia

    en.wikipedia.org/wiki/Graph_labeling

    In the mathematical discipline of graph theory, a graph labeling is the assignment of labels, traditionally represented by integers, to edges and/or vertices of a graph. [ 1 ] Formally, given a graph G = ( V , E ) , a vertex labeling is a function of V to a set of labels; a graph with such a function defined is called a vertex-labeled graph .

  6. Distinguishing coloring - Wikipedia

    en.wikipedia.org/wiki/Distinguishing_coloring

    In graph theory, a distinguishing coloring or distinguishing labeling of a graph is an assignment of colors or labels to the vertices of the graph that destroys all of the nontrivial symmetries of the graph. The coloring does not need to be a proper coloring: adjacent vertices are allowed to be given the same color. For the colored graph, there ...

  7. File:Chegg logo.svg - Wikipedia

    en.wikipedia.org/wiki/File:Chegg_logo.svg

    Chegg: Other versions: SVG development . The SVG code is . This text-logo was created with Inkscape. Licensing. Public domain Public domain false false:

  8. Accession number (cultural property) - Wikipedia

    en.wikipedia.org/wiki/Accession_number_(cultural...

    Label in a gallery indicating the object's accession number. In galleries, libraries, archives, and museums, an accession number is a unique identifier assigned to, and achieving initial control of, each acquisition. Assignment of accession numbers typically occurs at the point of accessioning or cataloging.

  9. Graceful labeling - Wikipedia

    en.wikipedia.org/wiki/Graceful_labeling

    In graph theory, a graceful labeling of a graph with m edges is a labeling of its vertices with some subset of the integers from 0 to m inclusive, such that no two vertices share a label, and each edge is uniquely identified by the absolute difference between its endpoints, such that this magnitude lies between 1 and m inclusive. [1]

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