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  2. Summation by parts - Wikipedia

    en.wikipedia.org/wiki/Summation_by_parts

    The formula for an integration by parts is () ′ = [() ()] ′ (). Beside the boundary conditions , we notice that the first integral contains two multiplied functions, one which is integrated in the final integral ( g ′ {\displaystyle g'} becomes g {\displaystyle g} ) and one which is differentiated ( f {\displaystyle f} becomes f ...

  3. Summation - Wikipedia

    en.wikipedia.org/wiki/Summation

    In mathematics, summation is the addition of a sequence of numbers, called addends or summands; the result is their sum or total.Beside numbers, other types of values can be summed as well: functions, vectors, matrices, polynomials and, in general, elements of any type of mathematical objects on which an operation denoted "+" is defined.

  4. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    Import PDF with multiple pages as layouts, export as a one-page PDF. All standard vector graphics editor features. LibreOffice: GNU LGPLv3 / MPLv2.0: Yes Yes Yes Yes Import from PDF (extension included by default), export as PDF including PDF/A. LibreOffice Draw: GNU LGPLv3 / MPLv2.0 Yes Yes Yes Yes Yes PDF viewing and limited editing ...

  5. App Store (Apple) - Wikipedia

    en.wikipedia.org/wiki/App_Store_(Apple)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 17 February 2025. Mobile app distribution platform by Apple For the macOS version of the App Store, see Mac App Store. App Store Screenshot of the App Store on iOS Developer(s) Apple Initial release July 10, 2008 ; 16 years ago (July 10, 2008) Operating system iOS, iPadOS, watchOS, tvOS, and VisionOS ...

  6. App store - Wikipedia

    en.wikipedia.org/wiki/App_store

    An app store is any digital storefront intended to allow search and review of software titles or other media offered for sale electronically. Critically, the application storefront itself provides a secure, uniform experience that automates the electronic purchase, decryption and installation of software applications or other digital media.

  7. Riemann sum - Wikipedia

    en.wikipedia.org/wiki/Riemann_sum

    If () = ([,]) (that is, the supremum of over [,]), the method is the upper rule and gives an upper Riemann sum or upper Darboux sum. If f ( x i ∗ ) = inf f ( [ x i − 1 , x i ] ) {\displaystyle f(x_{i}^{*})=\inf f([x_{i-1},x_{i}])} (that is, the infimum of f over [ x i − 1 , x i ] {\displaystyle [x_{i-1},x_{i}]} ), the method is the lower ...

  8. Formula editor - Wikipedia

    en.wikipedia.org/wiki/Formula_editor

    A formula editor is a computer program that is used to typeset mathematical formulas and mathematical expressions. Formula editors typically serve two purposes: They allow word processing and publication of technical content either for print publication, or to generate raster images for web pages or screen presentations.

  9. Help:Displaying a formula - Wikipedia

    en.wikipedia.org/wiki/Help:Displaying_a_formula

    MediaWiki stores rendered formulas in a cache so that the images of those formulas do not need to be created each time the page is opened by a user. To force the rerendering of all formulas of a page, you must open it with the getter variables action=purge&mathpurge=true. Imagine for example there is a wrong rendered formula in the article Integral