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  2. List of electronic color code mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_electronic_color...

    List of electronic color code mnemonics Mnemonics are used to help memorize the electronic color codes for resistors. Mnemonics describing specific and relatable scenarios are more memorable than abstract phrases.

  3. Electronic color code - Wikipedia

    en.wikipedia.org/wiki/Electronic_color_code

    An electronic color code or electronic colour code (see spelling differences) is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others.

  4. Lie group - Wikipedia

    en.wikipedia.org/wiki/Lie_group

    A Lie group can be defined as a ( Hausdorff) topological group that, near the identity element, looks like a transformation group, with no reference to differentiable manifolds. [14] First, we define an immersely linear Lie group to be a subgroup G of the general linear group such that.

  5. Incidence geometry - Wikipedia

    en.wikipedia.org/wiki/Incidence_geometry

    In mathematics, incidence geometry is the study of incidence structures. A geometric structure such as the Euclidean plane is a complicated object that involves concepts such as length, angles, continuity, betweenness, and incidence. An incidence structure is what is obtained when all other concepts are removed and all that remains is the data ...

  6. Data and information visualization - Wikipedia

    en.wikipedia.org/wiki/Color_coding_in_data...

    Data and information visualization ( data viz/vis or info viz/vis) [2] is the practice of designing and creating easy-to-communicate and easy-to-understand graphic or visual representations of a large amount [3] of complex quantitative and qualitative data and information with the help of static, dynamic or interactive visual items.

  7. Color code - Wikipedia

    en.wikipedia.org/wiki/Color_code

    A color code is a system for encoding and representing non-color information with colors to facilitate communication. This information tends to be categorical (representing unordered/qualitative categories) though may also be sequential (representing an ordered/quantitative variable).

  8. Four color theorem - Wikipedia

    en.wikipedia.org/wiki/Four_color_theorem

    A four-colored map of the states of the United States (ignoring lakes and oceans) In mathematics, the four color theorem, or the four color map theorem, states that no more than four colors are required to color the regions of any map so that no two adjacent regions have the same color. Adjacent means that two regions share a common boundary of ...

  9. Lie algebra cohomology - Wikipedia

    en.wikipedia.org/wiki/Lie_algebra_cohomology

    Lie algebra cohomology. In mathematics, Lie algebra cohomology is a cohomology theory for Lie algebras. It was first introduced in 1929 by Élie Cartan to study the topology of Lie groups and homogeneous spaces [1] by relating cohomological methods of Georges de Rham to properties of the Lie algebra.