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  2. Comparison of optimization software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_optimization...

    Given a system transforming a set of inputs to output values, described by a mathematical function f, optimization refers to the generation and selection of the best solution from some set of available alternatives, [1] by systematically choosing input values from within an allowed set, computing the value of the function, and recording the best value found during the process.

  3. Hardnesses of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Hardnesses_of_the_elements...

    Help; Learn to edit; Community portal; Recent changes; Upload file; Special pages

  4. Tungsten carbide - Wikipedia

    en.wikipedia.org/wiki/Tungsten_carbide

    Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering [7] for use in industrial machinery, engineering facilities, [8] molding blocks, [9] cutting tools, chisels, abrasives, armor ...

  5. Tungsten - Wikipedia

    en.wikipedia.org/wiki/Tungsten

    The name tungsten (which means ' heavy stone ' in Swedish and was the old Swedish name for the mineral scheelite and other minerals of similar density) is used in English, French, and many other languages as the name of the element, but wolfram (or volfram) is used in most European (especially Germanic and Slavic) languages and is derived from ...

  6. Comparison of numerical-analysis software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_numerical...

    Not free Proprietary: Primarily for statistics GNU MCSim: Frederic Y. Bois & Don Maszle 1991 1993 6.0.0 24 February 2018: Free GPL: General simulation and Monte Carlo sampling software GNU Octave: John W. Eaton 1988 1993 7.3.0 2 November 2022: Free GPL: General numerical computing package with many extension modules. Syntax mostly compatible ...

  7. List of computer algebra systems - Wikipedia

    en.wikipedia.org/wiki/List_of_computer_algebra...

    Free modified BSD license: Python-based TI-Nspire CAS (Computer Software) Texas Instruments: 2006 2009 5.1.3: 2020 Proprietary: Successor to Derive. Based on Derive's engine used in TI-89/Voyage 200 and TI-Nspire handheld Wolfram Alpha: Wolfram Research: 2009 2013: Pro version: $4.99 / month, Pro version for students: $2.99 / month, ioRegular ...

  8. Wolframite - Wikipedia

    en.wikipedia.org/wiki/Wolframite

    Wolframite is an iron, manganese, and tungstate mineral with a chemical formula of (Fe,Mn)WO 4 that is the intermediate mineral between ferberite (Fe 2+ rich) and hübnerite (Mn 2+ rich). [4] Along with scheelite , the wolframite series are the most important tungsten ore minerals.

  9. Scheelite - Wikipedia

    en.wikipedia.org/wiki/Scheelite

    Scheelite is a calcium tungstate mineral with the chemical formula Ca W O 4. It is an important ore of tungsten (wolfram). Scheelite is originally named after Swedish chemist Carl Wilhelm Scheele (1742–1786). Well-formed crystals are sought by collectors and are occasionally fashioned into gemstones when suitably free of flaws.