Das Kalenderblatt 100210

09/02/2010 - 09:40 von WM | Report spam
Although the historical practice has varied, the modern convention
arranges the letters from left to right in order of decreasing value;
the total is then calculated by adding the numerical values of all the
letters in the sequence. This can be summarised with the following
rules:

Unit values (I, X, C or M) may be repeated up to three times
Intermediate values (V, L, D) may not be repeated
To represent values 4 and 9, the lower unit is placed left to the
higher unit denoting a subtraction. This is to generate shorter
numeral sequences.

The subtraction principle (3) is quite restrictive:
The smaller number must be a power of ten (I, X or C) and precede a
number no larger than 10 times its own value. The smaller number
itself can be preceded only by a number at least 10 times greater
(e.g. LXC is invalid) and it must also be larger than any numeral that
follows the one from which it is being subtracted (e.g. CMD is
invalid).

Some scholars claim that it is allowed to place 4 M's providing the
greatest possible numeral to be 4999 (MMMMCMXCIX).

http://www.daube.ch/docu/glossary/r...erals.html

Aber schon zur Zeit dieser bodenstàndigen alten Römer erreichten die
Staatsschulden (unter Càsar Tiberius) 40 Milliarden Sesterzen. Solche
Zahlen mussten dann doch irgendwie dargestellt werden. Und anderthalb
Millennien spàter sickerte das Zeichen (?) ins Unendliche durch.

http://www.hs-augsburg.de/~mueckenh/GU/GU01.PPT#272,7,Folie 7

Gruß, WM
 

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#1 Michael Klemm
09/02/2010 - 12:00 | Warnen spam
WM schrieb:

Some scholars claim that it is allowed to place 4 M's providing the
greatest possible numeral to be 4999 (MMMMCMXCIX).



Anfang des 6ten Jahrhundert gab es bereits eine Art Stellenwertsystem.
Bei Dionysius Exiguus (Ende von Argumentum XV,
http://henk-reints.nl/cal/audette/denys.html)
heißt es:
Cum bissextis diebus suis fiunt simul dies XII CCCCXV...
[Zusammen mit den Schalttagen sind das insgesamt 12 415 Tage]

Gruß
Michael

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