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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 .
The accusative forms dŭōs m., dŭās f., the genitive dŭom, classical dŭōrum m./n., dŭārum f., and the dative/ablative dŭōbus m./n., dŭābus f., are original Latin formations replicating nominal declension patterns; at times, duo stands in for other case forms, especially when combined with invariant numerals, e. g. duo et vīgintī ...
This system results in "two thirds" for 2 ⁄ 3 and "fifteen thirty-seconds" for 15 ⁄ 32. This system is normally used for denominators less than 100 and for many powers of 10. Examples include "six ten-thousandths" for 6 ⁄ 10,000 and "three hundredths" for 0.03.
99.3 is "ninety-nine point three"; or "ninety-nine and three tenths" (U.S., occasionally). In English the decimal point was originally printed in the center of the line (0·002), but with the advent of the typewriter it was placed at the bottom of the line, so that a single key could be used as a full stop/period and as a decimal point.
The notation for 1000 was a circled or boxed X: Ⓧ, ⊗, ⊕, and by Augustan times was partially identified with the Greek letter Φ phi. Over time, the symbol changed to Ψ and ↀ. The latter symbol further evolved into ∞, then ⋈, and eventually changed to M under the influence of the Latin word mille "thousand". [48]
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 ...
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3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.