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  2. Quartic function - Wikipedia

    en.wikipedia.org/wiki/Quartic_function

    Since a quartic function is defined by a polynomial of even degree, it has the same infinite limit when the argument goes to positive or negative infinity. If a is positive, then the function increases to positive infinity at both ends; and thus the function has a global minimum .

  3. Quartic graph - Wikipedia

    en.wikipedia.org/wiki/Quartic_graph

    The Folkman graph, a quartic graph with 20 vertices, the smallest semi-symmetric graph. [3] The Meredith graph, a quartic graph with 70 vertices that is 4-connected but has no Hamiltonian cycle, disproving a conjecture of Crispin Nash-Williams. [4] Every medial graph is a quartic plane graph, and every quartic plane graph is the medial graph of ...

  4. Quartic equation - Wikipedia

    en.wikipedia.org/wiki/Quartic_equation

    In mathematics, a quartic equation is one which can be expressed as a quartic function equaling zero. The general form of a quartic equation is The general form of a quartic equation is Graph of a polynomial function of degree 4, with its 4 roots and 3 critical points .

  5. Kernel (statistics) - Wikipedia

    en.wikipedia.org/wiki/Kernel_(statistics)

    Several types of kernel functions are commonly used: uniform, triangle, Epanechnikov, [2] quartic (biweight), tricube, [3] triweight, Gaussian, quadratic [4] and cosine. In the table below, if K {\displaystyle K} is given with a bounded support , then K ( u ) = 0 {\displaystyle K(u)=0} for values of u lying outside the support.

  6. Klein quartic - Wikipedia

    en.wikipedia.org/wiki/Klein_quartic

    The Klein quartic with the two dual Klein graphs (14-gon edges marked with the same number are equal.) The Klein quartic is a quotient of the heptagonal tiling (compare the 3-regular graph in green) and its dual triangular tiling (compare the 7-regular graph in violet).

  7. Klein graphs - Wikipedia

    en.wikipedia.org/wiki/Klein_graphs

    This is a 7-regular graph with 24 vertices and 84 edges, named after Felix Klein. It is Hamiltonian , has chromatic number 4, chromatic index 7, radius 3, diameter 3 and girth 3. It can be embedded in the genus-3 orientable surface, where it forms the dual of the Klein map, with 56 triangular faces, Schläfli symbol {3,7} 8 .

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