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  2. List of representations of e - Wikipedia

    en.wikipedia.org/wiki/List_of_representations_of_e

    e. The mathematical constant e can be represented in a variety of ways as a real number. Since e is an irrational number (see proof that e is irrational ), it cannot be represented as the quotient of two integers, but it can be represented as a continued fraction. Using calculus, e may also be represented as an infinite series, infinite product ...

  3. Katal - Wikipedia

    en.wikipedia.org/wiki/Katal

    Katal. The katal (symbol: kat) is the unit of catalytic activity in the International System of Units (SI) [ 1] used for quantifying the catalytic activity of enzymes (that is, measuring the enzymatic activity level in enzyme catalysis) and other catalysts. The katal is invariant of the measurement procedure, but the measured numerical value is ...

  4. Metatropis - Wikipedia

    en.wikipedia.org/wiki/Metatropis

    Metatropis is a genus of true bugs belonging to the family Berytidae. [1] The species of this genus are found in Europe and Japan. [1] Species: [1] Metatropis aurita Breddin, 1907. Metatropis brevirostris Hsiao, 1974.

  5. Euler's identity - Wikipedia

    en.wikipedia.org/wiki/Euler's_identity

    In mathematics, Euler's identity[ note 1] (also known as Euler's equation) is the equality where. is pi, the ratio of the circumference of a circle to its diameter. Euler's identity is named after the Swiss mathematician Leonhard Euler. It is a special case of Euler's formula when evaluated for .

  6. Euler's formula - Wikipedia

    en.wikipedia.org/wiki/Euler's_formula

    v. t. e. Euler's formula, named after Leonhard Euler, is a mathematical formula in complex analysis that establishes the fundamental relationship between the trigonometric functions and the complex exponential function. Euler's formula states that, for any real number x, one has where e is the base of the natural logarithm, i is the imaginary ...

  7. PDF/E - Wikipedia

    en.wikipedia.org/wiki/PDF/E

    PDF/E. ISO 24517-1:2008 is an ISO Standard published in 2008. This standard defines a format (PDF/E) for the creation of documents used in geospatial, construction and manufacturing workflows [1] and is based on the PDF Reference version 1.6 from Adobe Systems. The specification also supports interactive media, including animation and 3D.

  8. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    LibreOffice. Free ( Mozilla Public License) an Office suite; allows to export (and import, with accuracy limitations) PDF files. Microsoft Word 2013. Proprietary. Desktop software. The 2013 edition of Office allows PDF files to be converted into a format that can be edited. Nitro PDF Reader.

  9. e (mathematical constant) - Wikipedia

    en.wikipedia.org/wiki/E_(mathematical_constant)

    e. The number e is a mathematical constant approximately equal to 2.71828 that can be characterized in many ways. It is the base of the natural logarithm function. It is the limit of as n tends to infinity, an expression that arises in the computation of compound interest.