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  2. Positive and negative parts - Wikipedia

    en.wikipedia.org/wiki/Positive_and_negative_parts

    Given a measurable space (X, Σ), an extended real-valued function f is measurable if and only if its positive and negative parts are. Therefore, if such a function f is measurable, so is its absolute value | f |, being the sum of two measurable functions.

  3. Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Fourier_transform

    An example application of the Fourier transform is determining the constituent pitches in a musical waveform.This image is the result of applying a constant-Q transform (a Fourier-related transform) to the waveform of a C major piano chord.

  4. List of companies of Russia - Wikipedia

    en.wikipedia.org/wiki/List_of_companies_of_Russia

    Russia has a high-income [1] mixed economy with state ownership in strategic areas of the economy. Market reforms in the 1990s privatized much of Russian industry and agriculture, with notable exceptions to this privatization occurring in the energy and defense-related sectors.

  5. PlusToken - Wikipedia

    en.wikipedia.org/wiki/PlusToken

    PlusToken started in April 2018. [2] It offered monthly payments to users of its cryptocurrency wallet. [3] There was also a token called Plus associated with it. [4] The total amount of cryptocurrency taken by PlusToken was estimated to be worth (based on 2019 prices) between $2 and US$2.9 billion.

  6. F-plasmid - Wikipedia

    en.wikipedia.org/wiki/F-plasmid

    The F-plasmid (first named F by one of its discoverers Esther Lederberg;also called the sex factor in E. coli,the F sex factor, or the fertility factor) [1] [2] [3] allows genes to be transferred from one bacterium carrying the factor to another bacterium lacking the factor by conjugation.

  7. FunPlus - Wikipedia

    en.wikipedia.org/wiki/FunPlus

    FunPlus is a video game developer and publisher headquartered in Switzerland, with operations in China, Singapore and Spain. [2] The company has developed the following mobile games: State of Survival, Frost & Flame: King of Avalon, Guns of Glory: Lost Island, Stormshot: Isle of Adventure and Sea of Conquest: Pirate War.

  8. Department of Forests and Park Services of Bhutan - Wikipedia

    en.wikipedia.org/wiki/Department_of_Forests_and...

    The Forest Protection and Enforcement Division, the then Forest Protection & Land Use Section (FPLUS) was formed sometime in 1991 as one of the oldest Functional Divisions under the Department. [5] It was renamed to FPUD in 2000.

  9. Plus–minus sign - Wikipedia

    en.wikipedia.org/wiki/Plus–minus_sign

    The symbols ± and ∓ are used in chess annotation to denote a moderate but significant advantage for White and Black, respectively. [4] Weaker and stronger advantages are denoted by ⩲ and ⩱ for only a slight advantage, and +– and –+ for a strong, potentially winning advantage, again for White and Black respectively.