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  2. Domain coloring - Wikipedia

    en.wikipedia.org/wiki/Domain_coloring

    Domain coloring plot of the function f(x) = ⁠ (x 2 − 1)(x − 2 − i) 2 / x 2 + 2 + 2i ⁠, 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 ...

  3. Covering groups of the alternating and symmetric groups

    en.wikipedia.org/wiki/Covering_groups_of_the...

    For n = 3, the symmetric group is SL(2, 2) ≅ PSL(2, 2) and is its own Schur cover. For n = 4, the Schur cover of the alternating group is given by SL(2, 3) → PSL(2, 3) ≅ A 4, which can also be thought of as the binary tetrahedral group covering the tetrahedral group.

  4. Color and Symmetry - Wikipedia

    en.wikipedia.org/wiki/Color_and_Symmetry

    Color and Symmetry is a book by Arthur L. Loeb published by Wiley Interscience in 1971. The author adopts an unconventional algorithmic approach to generating the line and plane groups based on the concept of "rotocenter" (the invariant point of a rotation).

  5. Cayley graph - Wikipedia

    en.wikipedia.org/wiki/Cayley_graph

    In mathematics, a Cayley graph, also known as a Cayley color graph, Cayley diagram, group diagram, or color group, [1] is a graph that encodes the abstract structure of a group. Its definition is suggested by Cayley's theorem (named after Arthur Cayley ), and uses a specified set of generators for the group.

  6. Cellular homology - Wikipedia

    en.wikipedia.org/wiki/Cellular_homology

    The n-dimensional sphere S n admits a CW structure with two cells, one 0-cell and one n-cell.Here the n-cell is attached by the constant mapping from to 0-cell. Since the generators of the cellular chain groups (,) can be identified with the k-cells of S n, we have that (,) = for =,, and is otherwise trivial.

  7. Alternating group - Wikipedia

    en.wikipedia.org/wiki/Alternating_group

    As in the symmetric group, any two elements of A n that are conjugate by an element of A n must have the same cycle shape.The converse is not necessarily true, however. If the cycle shape consists only of cycles of odd length with no two cycles the same length, where cycles of length one are included in the cycle type, then there are exactly two conjugacy classes for this cycle shape (Scott ...

  8. Plotting algorithms for the Mandelbrot set - Wikipedia

    en.wikipedia.org/wiki/Plotting_algorithms_for...

    To get colorful images of the set, the assignment of a color to each value of the number of executed iterations can be made using one of a variety of functions (linear, exponential, etc.). One practical way, without slowing down calculations, is to use the number of executed iterations as an entry to a palette initialized at startup.

  9. Rossmann fold - Wikipedia

    en.wikipedia.org/wiki/Rossmann_fold

    The Rossmann fold is a tertiary fold found in proteins that bind nucleotides, such as enzyme cofactors FAD, NAD +, and NADP +.This fold is composed of alternating beta strands and alpha helical segments where the beta strands are hydrogen bonded to each other forming an extended beta sheet and the alpha helices surround both faces of the sheet to produce a three-layered sandwich.

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