From: Peter Kirk (email@example.com)
Date: Tue Oct 12 2004 - 03:30:04 CST
On 12/10/2004 00:10, Mike Ayers wrote:
> > From: Hohberger, Clive [mailto:CHohberger@zebra.com]
> > Sent: Monday, October 11, 2004 11:08 AM
> > I agree with you... almost.. I think that AD and BC are
> > really ordinal numbers, which denote relative position in a
> > series from a 1-origin point. I thought "1 AD" really stands
> > for "primo anno domine" (pardon my forgotten Latin) or
> > "first year of our lord".
> I'm not sure. As I recall (and it's been a long time), Latin
> ordinals can only be used for small quantities. Therefore I read
> "anno domine uno". Note that it is properly A.D. 1, not 1 A.D. as
> usually printed. Also note that the dual scale is bilingual - Latin
> in the forward direction and English in the reverse!
> > Cardinal numbers denote quantity, and may be negative or zero
> > as well as positive.
> I think that you are confusing a mathematical definition with
> the more common one which equates cardinal numbers and counting
> numbers. We do not speak of the "negative third year of the Clinton
> presidency", because no such year existed, likewise for B.C. and A.D..
But for certain purposes e.g. historical astronomical calculations (used
for establishing chronology from records of eclipses etc) the year
numbers used are effectively negative numbers (and zero) AD.
-- Peter Kirk firstname.lastname@example.org (personal) email@example.com (work) http://www.qaya.org/
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