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  2. APL syntax and symbols - Wikipedia

    en.wikipedia.org/wiki/APL_syntax_and_symbols

    ∇ AREA ← DEGREES SEGMENTAREA RADIUS; FRACTION; CA; SIGN FRACTION ← DEGREES ÷ 360 CA ← CIRCLEAREA RADIUS SIGN ← (× DEGREES) ≠× RADIUS AREA ← FRACTION × CA ×~ SIGN ⍝ this APL statement is more complex, as a one-liner - but it solves vectorized arguments: a tradeoff - complexity vs. branching ∇ 90 180 270 ¯90 ∘.

  3. Methods of computing square roots - Wikipedia

    en.wikipedia.org/wiki/Methods_of_computing...

    Note: x can be found by guessing what c/(20·p) is and doing a trial calculation of y, then adjusting x upward or downward as necessary. Place the digit as the next digit of the root, i.e., above the two digits of the square you just brought down. Thus the next p will be the old p times 10 plus x. Subtract y from c to form a new remainder.

  4. List of Unicode characters - Wikipedia

    en.wikipedia.org/wiki/List_of_Unicode_characters

    HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name.

  5. Deuterium - Wikipedia

    en.wikipedia.org/wiki/Deuterium

    The reduced mass of the system in these equations is close to the mass of a single electron, but differs from it by a small amount about equal to the ratio of mass of the electron to the nucleus. For 1 H, this amount is about ⁠ 1837 / 1836 ⁠ , or 1.000545, and for 2 H it is even smaller: ⁠ 3671 / 3670 ⁠ , or 1.0002725.

  6. Personal computer - Wikipedia

    en.wikipedia.org/wiki/Personal_computer

    An artist's depiction of a 2000s-era desktop-style personal computer, which includes a metal case with the computing components, a display and a keyboard (mouse not shown). A personal computer, often referred to as a PC or simply computer, is a computer designed for individual use. [1]

  7. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The base "Roman fraction" is S, indicating 1 ⁄ 2. The use of S (as in VIIS to indicate 7 1 ⁄ 2) is attested in some ancient inscriptions [45] and also in the now rare apothecaries' system (usually in the form SS): [44] but while Roman numerals for whole numbers are essentially decimal, S does not correspond to 5 ⁄ 10, as one might expect ...

  8. Airbus A220 - Wikipedia

    en.wikipedia.org/wiki/Airbus_A220

    The Airbus A220 is a family of five-abreast narrow-body airliners by Airbus Canada Limited Partnership (ACLP). It was originally developed by Bombardier Aviation and had two years in service as the Bombardier CSeries.

  9. Airbus A380 - Wikipedia

    en.wikipedia.org/wiki/Airbus_A380

    Airbus's publicity has stressed the comfort and space of the A380 cabin, [220] and advertised onboard relaxation areas such as bars, beauty salons, duty-free shops, and restaurants. [ 221 ] [ 222 ] Proposed amenities resembled those installed on earlier airliners, particularly 1970s wide-body jets, [ 223 ] which largely gave way to regular ...