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  2. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]

  3. GE PowerHaul - Wikipedia

    en.wikipedia.org/wiki/GE_PowerHaul

    Freightliner 70014 at North Wingfield in September 2012 Colas Rail 70805 at Westbury in April 2014 Operail Dr20 29010 (PH37ACai) at Pori in November 2020. The PowerHaul Class are a 6 axle Co-Co design for heavy mainline freight operations - the design originated in a collaboration between Freightliner who required a more powerful freight locomotive, and General Electric who needed a launch ...

  4. List of formulae involving π - Wikipedia

    en.wikipedia.org/wiki/List_of_formulae_involving_π

    where C is the circumference of a circle, d is the diameter, and r is the radius.More generally, = where L and w are, respectively, the perimeter and the width of any curve of constant width.

  5. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    The Natural Area Code, this is the smallest base such that all of ⁠ 1 / 2 ⁠ to ⁠ 1 / 6 ⁠ terminate, a number n is a regular number if and only if ⁠ 1 / n ⁠ terminates in base 30. 32: Duotrigesimal: Found in the Ngiti language. 33: Use of letters (except I, O, Q) with digits in vehicle registration plates of Hong Kong. 34

  6. Positional notation - Wikipedia

    en.wikipedia.org/wiki/Positional_notation

    If an unknown weight W is balanced with 3 (3 1) on its pan and 1 and 27 (3 0 and 3 3) on the other, then its weight in decimal is 25 or 10 1 1 in balanced base-3. 10 1 1 3 = 1 × 3 3 + 0 × 3 2 − 1 × 3 1 + 1 × 3 0 = 25.

  7. Balanced ternary - Wikipedia

    en.wikipedia.org/wiki/Balanced_ternary

    Balanced ternary is a ternary numeral system (i.e. base 3 with three digits) that uses a balanced signed-digit representation of the integers in which the digits have the values −1, 0, and 1.

  8. Republic of the United States of Indonesia Cabinet - Wikipedia

    en.wikipedia.org/wiki/Republic_of_the_United...

    On 19 January 1950, State Minister Moh. Roem was appointed to the RUSI High Commission in The Hague and resigned from the cabinet. Following a report from the attorney general, State Minister Sultan Hamid II was dismissed on 5 April 1950 for involvement in the rebellion led by Raymond Westerling. Neither of these state ministers were replaced ...

  9. UGL Rail PH37ACmai - Wikipedia

    en.wikipedia.org/wiki/UGL_Rail_PH37ACmai

    [1] [2] UGL are manufacturing three prototypes at their Broadmeadow factory. [3] [4] They are similar in appearance to the UGL Rail C44aci class. In July 2016, UGL secured a contract to supply three units to Pacific National for use in Queensland. [5] These entered service in 2018 as the PH class, numbered PH001-003.