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  2. Ordinal numeral - Wikipedia

    en.wikipedia.org/wiki/Ordinal_numeral

    Ordinal numbers may be written in English with numerals and letter suffixes: 1st, 2nd or 2d, 3rd or 3d, 4th, 11th, 21st, 101st, 477th, etc., with the suffix acting as an ordinal indicator. Written dates often omit the suffix, although it is nevertheless pronounced.

  3. Ordinal number - Wikipedia

    en.wikipedia.org/wiki/Ordinal_number

    To define this set, he defined the transfinite ordinal numbers and transformed the infinite indices into ordinals by replacing ∞ with ω, the first transfinite ordinal number. Cantor called the set of finite ordinals the first number class. The second number class is the set of ordinals whose predecessors form a countably infinite set.

  4. Even and odd ordinals - Wikipedia

    en.wikipedia.org/wiki/Even_and_odd_ordinals

    In fact, the even ordinal ω + 4 cannot be expressed as β + β, and the ordinal number (ω + 3)2 = (ω + 3) + (ω + 3) = ω + (3 + ω) + 3 = ω + ω + 3 = ω2 + 3. is not even. A simple application of ordinal parity is the idempotence law for cardinal addition (given the well-ordering theorem). Given an infinite cardinal κ, or generally any ...

  5. Ordinal date - Wikipedia

    en.wikipedia.org/wiki/Ordinal_date

    Mission control center's board with time data, displaying coordinated universal time with ordinal date (without year) prepended, on October 22, 2013 (i.e.2013-295). An ordinal date is a calendar date typically consisting of a year and an ordinal number, ranging between 1 and 366 (starting on January 1), representing the multiples of a day, called day of the year or ordinal day number (also ...

  6. List of date formats by country - Wikipedia

    en.wikipedia.org/wiki/List_of_date_formats_by...

    Both d.m.yyyy. and dd.mm.yyyy. are accepted. A period is used as a separator and after the year because the Montenegrin language writes these numbers as ordinal numbers that are written as the corresponding cardinal number, with a period at the end. [118] Montserrat: No: Yes: No Morocco: No: Yes: No [119] Mozambique: No: Yes: No Myanmar: Yes ...

  7. First time flying first class? Here are etiquette tips to ...

    www.aol.com/first-time-flying-first-class...

    If you're upgrading a flight for the first time, Gilbert Ott, who flies an estimated 200,000 miles a year, has a few tips for those who want to blend in with the first- and business-class crowds ...

  8. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    The ordinal category are based on ordinal numbers such as the English first, second, third, which specify position of items in a sequence. In Latin and Greek, the ordinal forms are also used for fractions for amounts higher than 2; only the fraction ⁠ 1 / 2 ⁠ has special forms.

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