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I overhauled article to apply more mathematically rigorous definitions and descriptions so the entry could stand with the nominal, ordinal, and cardinal number entries, the class of which it belongs.
Most of the old entry was moved to the applications sub-heading and somewhat shortened. A great many examples are given in the article: Numbering schemes and a link was provided in this entry over to that one.DV8 17:55, 26 August 2005 (UTC)
There's no need for a dump from RFC 1982. I've just referenced it, and linked to it. RFC 1982 just defines arithmetic for one very specific use for serial numbers, and is not a general rule. -- The Anome 03:42, 15 January 2006 (UTC)
'because in some countries each banknote has a unique serial number.' Interesting - I would have thought this applied to every currency, are there any examples where this is not the case? I guess coins don't have them, so its plausible. 22.214.171.124 04:20, 14 September 2007 (UTC)