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  2. Distribution-free control chart - Wikipedia

    en.wikipedia.org/.../Distribution-free_Control_Chart

    There are distribution-free control charts for both Phase-I analysis and Phase-II monitoring. One of the most notable distribution-free control charts for Phase-I analysis is RS/P chart proposed by G. Capizzi and G. Masaratto. RS/P charts separately monitor location and scale parameters of a univariate process using two separate charts.

  3. Darboux's theorem - Wikipedia

    en.wikipedia.org/wiki/Darboux's_theorem

    Moreover, satisfies the first set of hypotheses in Darboux's theorem, and so locally there is a coordinate chart near in which = + … +. Taking an exterior derivative now shows ω = d θ = d x 1 ∧ d y 1 + … + d x m ∧ d y m . {\displaystyle \omega =\mathrm {d} \theta =\mathrm {d} x_{1}\wedge \mathrm {d} y_{1}+\ldots +\mathrm {d} x_{m ...

  4. Pfaffian function - Wikipedia

    en.wikipedia.org/wiki/Pfaffian_function

    Wilkie also tackled the question of which finite sets of analytic functions could be added to R to get a model-completeness result. It turned out that adding any Pfaffian chain restricted to the box [0, 1] m would give the same result. In particular one may add all Pfaffian functions to R to get the structure R Pfaff as a variant of Gabrielov's ...

  5. Pfaff - Wikipedia

    en.wikipedia.org/wiki/Pfaff

    PFAFF was founded in Kaiserslautern, Germany, in 1862 by instrument maker Georg Michael Pfaff (1823–1893). Pfaff's first machine was handmade, and designed to sew leather in the manufacture of shoes. In 1885, Georg Michael Pfaff opened a sewing machine shop in London. The PFAFF factory was expanded and modernized.

  6. Johann Friedrich Pfaff - Wikipedia

    en.wikipedia.org/wiki/Johann_Friedrich_Pfaff

    Johann Friedrich Pfaff (sometimes spelled Friederich; 22 December 1765 – 21 April 1825) was a German mathematician. He was described as one of Germany's most eminent mathematicians during the 19th century.

  7. SVP Worldwide - Wikipedia

    en.wikipedia.org/wiki/SVP_Worldwide

    SVP was formed when Kohlberg & Company, an American private equity firm that owned the Swedish VSM Group (owner of the Husqvarna Viking and Pfaff sewing machine brands), combined VSM with Singer, [5] which it acquired in 2004 for $134 million. [6] The company was founded in 2006 [2] and was formerly headquartered in Hamilton, Bermuda. [7]

  8. Warnier/Orr diagram - Wikipedia

    en.wikipedia.org/wiki/Warnier/Orr_diagram

    In general, though, it is a bad idea to "hard code" a constant other than "0" or "1" in a number of times clause—the design should be flexible enough to allow for changes in the number of times without changes to the design. For instance, if a company has 38 employees at the time a design is done, hard coding a "38" as the "number of ...

  9. Responsibility assignment matrix - Wikipedia

    en.wikipedia.org/wiki/Responsibility_assignment...

    In business and project management, a responsibility assignment matrix [1] (RAM), also known as RACI matrix [2] (/ ˈ r eɪ s i /; responsible, accountable, consulted, and informed) [3] [4] or linear responsibility chart [5] (LRC), is a model that describes the participation by various roles in completing tasks or deliverables [4] for a project or business process.