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  2. Bell number - Wikipedia

    en.wikipedia.org/wiki/Bell_number

    As well as appearing in counting problems, these numbers have a different interpretation, as moments of probability distributions. In particular, B n {\displaystyle B_{n}} is the n {\displaystyle n} -th moment of a Poisson distribution with mean 1.

  3. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Mathematics is a field of study that discovers and organizes methods, theories and theorems that are developed and proved for the needs of empirical sciences and mathematics itself.

  4. Transistor count - Wikipedia

    en.wikipedia.org/wiki/Transistor_count

    The transistor count is the number of transistors in an electronic device (typically on a single substrate or silicon die).It is the most common measure of integrated circuit complexity (although the majority of transistors in modern microprocessors are contained in cache memories, which consist mostly of the same memory cell circuits replicated many times).

  5. Scientific method - Wikipedia

    en.wikipedia.org/wiki/Scientific_method

    [153] [x] As David Deutsch put it in 2009: "the search for hard-to-vary explanations is the origin of all progress". [144] An example here can be found in one of Einstein's thought experiments. The one of a lab suspended in empty space is an example of a useful invariant observation.

  6. AP Calculus - Wikipedia

    en.wikipedia.org/wiki/AP_Calculus

    AP Calculus AB is an Advanced Placement calculus course. It is traditionally taken after precalculus and is the first calculus course offered at most schools except for possibly a regular or honors calculus class.

  7. List of best-selling mobile phones - Wikipedia

    en.wikipedia.org/wiki/List_of_best-selling...

    The Nokia 1100 (shown here) and 1110 are the best-selling handsets. [1] [2] The iPhone 6 and 6 Plus are the best-selling smartphones.[3] [2]This is a list of best-selling mobile phones.

  8. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [6] [7] [8] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [9] the pattern of the position detection markers was determined by finding the least-used sequence of ...

  9. Corolla, North Carolina - Wikipedia

    en.wikipedia.org/wiki/Corolla,_North_Carolina

    Location of Corolla, North Carolina Overview from the Currituck Lighthouse Currituck Beach Lighthouse in Corolla, NC. Corolla (/ k ə ˈ r ɑː l ə / kuh-RAHL-uh) [1] is an unincorporated community located in Poplar Branch township, Currituck County, North Carolina, United States, along the northern Outer Banks.