I speak Esperanto, in which the number system goes like this: 0-9: nulo, unu, du, tri, kvar, kvin, ses, sep, ok, nau, dek 10-19: dek-unu, dek-du, dek-tri, dek-kvar, dek-kvin, dek-ses, dek-sep, dek-ok, dek-nau 20-29: dudek-unu, dudek-du, dudek-tri, etc. .... 100-109: cent, cent-unu, cent-du, cent-tri, etc. ... 1000-1009: mil, mil-unu, mil-du, mil-tri, etc.
2012 = du mil dek du I'm told that Japanese has a similar simple way of naming the integers. Bruce On Mon, Oct 8, 2012 at 5:28 PM, Dean Gerber <pd_ger...@yahoo.com> wrote: > I don't think so. The original point (2500 years ago ?) was and still is > to have a compact notation for the natural numbers that avoids the problem > of naming all or at a least large number of them individually. In English > we name the first few numbers individually: zero, one, two, three ... ten, > eleven, twelve, at which point we begin to notice that this is becoming > cumbersome. We wobble on to the equivalent , three-teen, four-teen, > five-teen, ... nine-teen, and then get more and more rational and closer > and closer to a positional system as the numbers get ever larger. We can > at least always figure the value of our names once we have mastered the art > of combining a small number of basic words: > > one two three ...nineteen > > twenty thirty .. .ninety (we are getting there: twenty = two-tens, thirty > = three-tens, etc) > > hundred, thousand, million, billion, trillion, quadrillion ... > > Quick now: express 75853729915229585876325067 in "words" > > The point of positional notation is to use a very small set of atomic > symbols, the "numerals", say N of them, which form an ordered sequence > that "names" the first N-1 natural numbers 0, 1, 2, ... , N-1 (N some > definite natural number, "two", "ten", sixteen", "sixty" etc., the "base"). > The natural numbers are then symbolized by strings of these numerals. The > value assigned to any particular numeral in a particular position within a > string is that numeral times the base raised to the power of that numeral's > position in the string (positions in the string are indexed right to left > by the natural numbers starting at 0 at the rightmost position). The value > of the string as whole is the sum of the all values assigned to each > particular numeral at its particular position. > > 1. The simplest notation: binary - base 2, numerals {0,1}. > 2. Common early computer world: octal - base 8, numerals {0 ... 7}. > 3. Most common modern: decimal - base 10, numerals {0 ... 9} > 4. Modern computer world: hexadecimal (senidenary) - base 16, numerals > {0 ... 9 a b c d e f} > 5. Most incredible: sexagesimal (Babylonian): - base 60, numerals { > ingenious! value of each numeral can be derived from its symbol} > > All Babylonian children had to memorize the multiplication and addition > tables or Be Left Behind [image: ;) winking] > > Much follows from this incredible idea. We can create rational and even > real numbers out of the notation by adding to our set of numerals the point > symbol ( usually ".") and assigning negative powers of the base to the > positions right of the point. All of our algorithms for adding, > subtracting, multiplying and dividing numbers are consequences of the > positional notation. > > Joshua Thorp is exactly correct. The formula he presents is the very > elementary formula for the sum of a finite geometric series. > > Dean Gerber > > >
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