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  2. Russian declension - Wikipedia

    en.wikipedia.org/wiki/Russian_declension

    In Russian grammar, the system of declension is elaborate and complex. Nouns, pronouns, adjectives, demonstratives, most numerals and other particles are declined for two grammatical numbers (singular and plural) and six grammatical cases (see below); some of these parts of speech in the singular are also declined by three grammatical genders (masculine, feminine and neuter).

  3. Russian grammar - Wikipedia

    en.wikipedia.org/wiki/Russian_grammar

    Russian has several classes of numerals ([имена] числительные): cardinal, ordinal, collective, and also fractional constructions; also it has other types of words, relative to numbers: collective adverbial forms (вдвоём), multiplicative (двойной) and counting-system (двоичный) adjectives, some numeric ...

  4. Wacław Sierpiński - Wikipedia

    en.wikipedia.org/wiki/Wacław_Sierpiński

    Wacław Franciszek Sierpiński (Polish: [ˈvat͡swaf fraɲˈt͡ɕiʂɛk ɕɛrˈpij̃skʲi] ⓘ; 14 March 1882 – 21 October 1969) was a Polish mathematician. [1] He was known for contributions to set theory (research on the axiom of choice and the continuum hypothesis), number theory, theory of functions, and topology.

  5. Regnal number - Wikipedia

    en.wikipedia.org/wiki/Regnal_number

    Regnal numbers are ordinal numbers used to distinguish among persons with the same name who held the same office. Most importantly, they are used to distinguish monarchs.An ordinal is the number placed after a monarch's regnal name to differentiate between a number of kings, queens or princes reigning the same territory with the same regnal name.

  6. Ordinal number - Wikipedia

    en.wikipedia.org/wiki/Ordinal_number

    In set theory, an ordinal number, or ordinal, is a generalization of ordinal numerals (first, second, n th, etc.) aimed to extend enumeration to infinite sets. [ 1 ] A finite set can be enumerated by successively labeling each element with the least natural number that has not been previously used.

  7. Cardinal and Ordinal Numbers - Wikipedia

    en.wikipedia.org/wiki/Cardinal_and_Ordinal_Numbers

    Cardinal and Ordinal Numbers is a book on transfinite numbers, by Polish mathematician Wacław Sierpiński. It was published in 1958 by Państwowe Wydawnictwo Naukowe , as volume 34 of the series Monografie Matematyczne of the Institute of Mathematics of the Polish Academy of Sciences .

  8. Ordinal numeral - Wikipedia

    en.wikipedia.org/wiki/Ordinal_numeral

    Ordinal indicator – Character(s) following an ordinal number (used when writing ordinal numbers, such as a super-script) Ordinal number – Generalization of "n-th" to infinite cases (the related, but more formal and abstract, usage in mathematics) Ordinal data, in statistics; Ordinal date – Date written as number of days since first day of ...

  9. Category:Ordinal numbers - Wikipedia

    en.wikipedia.org/wiki/Category:Ordinal_numbers

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