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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.
Both Gillman and John C. Oxtoby call the writing style "leisurely" and "unhurried", [1] [2] and although Gillman criticizes the translation from an earlier Polish-language manuscript into English as unpolished, and points to several errors in the bibliography, he does not find the writing in the text of the book to be problematic. [2]
Single-digit numbers for day or month may have a preceding zero (for example "28.08.2017") is more usual. When saying the date, it is usually pronounced using the ordinal number of the day first (in neutral grammatical gender), then the month in genitive case (for example "Двадцать восьмое августа ").
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 ...
If the value is "on", the output is an ordinal number, otherwise it is a cardinal number. us: Optional. If the value is "on", the output of numbers does not include "and" to separate hundreds from smaller values, nor to separate thousands from hundreds. This accords with American usage as described at English numerals.
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.
The numbers are written as pronounced in Slavonic, [9] generally from the high value position to the low value position, with the exception of 11 through 19, which are written and pronounced with the ones unit before the tens; for example, ЗІ (17) is "семнадсять" (literally seven-on-ten, cf. the English seven-teen).
Ordinal numbers are formed from cardinal numbers by prefixing the relative forms lok-(m), nak-(f), yenik-(n) as appropriate, to the masculine form of the numeral and by adding -et after the numeral. e.g. akany five, nakikanyet fifth (feminine singular) iuni three, lokiuniet third (masculine singular) iyarei two, yenikiyareit second (neuter ...