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  2. Matrix (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Matrix_(mathematics)

    Then the behavior of the electronic component can be described by B = H · A, where H is a 2 x 2 matrix containing one impedance element (h 12), one admittance element (h 21), and two dimensionless elements (h 11 and h 22). Calculating a circuit now reduces to multiplying matrices.

  3. List of algorithms - Wikipedia

    en.wikipedia.org/wiki/List_of_algorithms

    An algorithm is fundamentally a set of rules or defined procedures that is typically designed and used to solve a specific problem or a broad set of problems.. Broadly, algorithms define process(es), sets of rules, or methodologies that are to be followed in calculations, data processing, data mining, pattern recognition, automated reasoning or other problem-solving operations.

  4. Discrete Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Discrete_Fourier_transform

    The standard DFT acts on a sequence x 0, x 1, ..., x N−1 of complex numbers, which can be viewed as a function {0, 1, ..., N − 1} → C. The multidimensional DFT acts on multidimensional sequences, which can be viewed as functions

  5. Logistic regression - Wikipedia

    en.wikipedia.org/wiki/Logistic_regression

    This exponential relationship provides an interpretation for : The odds multiply by for every 1-unit increase in x. [ 22 ] For a binary independent variable the odds ratio is defined as a d b c {\displaystyle {\frac {ad}{bc}}} where a , b , c and d are cells in a 2×2 contingency table .

  6. History of computing hardware - Wikipedia

    en.wikipedia.org/wiki/History_of_computing_hardware

    The basic cycle time was 1.2 milliseconds, and a multiplication could be completed in about 2.16 milliseconds. The multiplier used almost a quarter of the machine's 4,050 vacuum tubes (valves). [126] A second machine was purchased by the University of Toronto, before the design was revised into the Mark 1 Star.

  7. 7×57mm Mauser - Wikipedia

    en.wikipedia.org/wiki/7×57mm_Mauser

    [8] [9] This lower specification is in deference to the Remington Rolling block rifles that may still be in circulation. Concerns regarding the early Mauser rifles such as the models 93 and 95 are misplaced, [ 9 ] as the original ammunition issued with the M93 Spanish Mauser produced an average pressure of 50,370 CUP in those rifles.

  8. Cancer - Wikipedia

    en.wikipedia.org/wiki/Cancer

    Tobacco use is the cause of about 22% of cancer deaths. [2] Another 10% are due to obesity, poor diet, lack of physical activity or excessive alcohol consumption. [2] [8] [9] Other factors include certain infections, exposure to ionizing radiation, and environmental pollutants. [3]

  9. List of countries by minimum wage - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    None; US$2.65 per hour for employment with the national government; all states have a minimum hourly wage for government workers: US$2.00 in Pohnpei, US$1.25 in Chuuk, US$1.42 in Kosrae, and US$1.60 in Yap; US$1.75 for private sector workers in Pohnpei.