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  2. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    The same suffix may be used with more than one category of number, as for example the orginary numbers secondary and tertiary and the distributive numbers binary and ternary. For the hundreds, there are competing forms: Those in -gent- , from the original Latin, and those in -cent- , derived from centi- , etc. plus the prefixes for 1 through 9 .

  3. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    "A base is a natural number B whose powers (B multiplied by itself some number of times) are specially designated within a numerical system." [1]: 38 The term is not equivalent to radix, as it applies to all numerical notation systems (not just positional ones with a radix) and most systems of spoken numbers. [1]

  4. English numerals - Wikipedia

    en.wikipedia.org/wiki/English_numerals

    twenty-three point three eight billion Often, large numbers are written with (preferably non-breaking ) half-spaces or thin spaces separating the thousands (and, sometimes, with normal spaces or apostrophes ) instead of commas —to ensure that confusion is not caused in countries where a decimal comma is used.

  5. Hilbert's problems - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_problems

    Of the cleanly formulated Hilbert problems, numbers 3, 7, 10, 14, 17, 18, 19, 21, and 20 have resolutions that are accepted by consensus of the mathematical community. Problems 1, 2, 5, 6, [ a ] 9, 11, 12, 15, and 22 have solutions that have partial acceptance, but there exists some controversy as to whether they resolve the problems.

  6. 27 (number) - Wikipedia

    en.wikipedia.org/wiki/27_(number)

    There are exactly twenty-seven straight lines on a smooth cubic surface, [2] which give a basis of the fundamental representation of Lie algebra. [ 3 ] [ 4 ] The unique simple formally real Jordan algebra , the exceptional Jordan algebra of self-adjoint 3 by 3 matrices of quaternions , is 27-dimensional; [ 5 ] its automorphism group is the 52 ...

  7. Latin numerals - Wikipedia

    en.wikipedia.org/wiki/Latin_Numerals

    Based on this series of numerals there is a series of adverbs: simpliciter 'simply, frankly', dupliciter 'doubly, ambiguously', tripliciter 'in three different ways' etc., as well as verbs such as duplicāre 'to double', triplicāre 'to triple', quadruplicāre 'to make four times as much', and so on.

  8. Ordinal numeral - Wikipedia

    en.wikipedia.org/wiki/Ordinal_numeral

    In linguistics, ordinal numerals or ordinal number words are words representing position or rank in a sequential order; the order may be of size, importance, chronology, and so on (e.g., "third", "tertiary"). They differ from cardinal numerals, which represent quantity (e.g., "three") and other types of numerals.

  9. Vigesimal - Wikipedia

    en.wikipedia.org/wiki/Vigesimal

    In a vigesimal place system, twenty individual numerals (or digit symbols) are used, ten more than in the decimal system. One modern method of finding the extra needed symbols is to write ten as the letter A, or A 20, where the 20 means base 20, to write nineteen as J 20, and the numbers between with the corresponding letters of the alphabet.