From: Luke-Jr (luke@dashjr.org)
Date: Thu Mar 10 2011 - 08:14:07 CST
Curiously, these symbols seem to be obsolete. From my reading yesterday, the
Dozenal Society of America uses U+1D4CD for gek/ten, and U+2130 for el(even),
while the British use a rotated '2' (equivalent to Tonal U+E9DE) and rotated
'3' (U+E9DD) for the same.
The American characters seem more logical for such a system, but it would be
nice if U+1D4CD were on the BMP. Non-BMP characters seem to have significant
usability problems.
On Thursday, March 10, 2011 2:08:47 am Mark Rosa wrote:
> That symbol for 11 looks less like an L and more like an upside-down 7 from
> the font "Didot".
>
> http://www.identifont.com/samples/adobe/Didot.gif
>
> My guess is that that's how the original author produced this sign, rather
> than make a specially-bent "L", but you never know.
>
> Mark
>
>
> ----- Original Message -----
>
> >> From: "Luke-Jr" <luke@dashjr.org>
> >> To: unicode@unicode.org
> >> Date: 2011-03-10 05:07:05
> >> Subject: Re: Assigning a plane for mapping digits for many different
> >> bases
> >>
> >> On Wednesday, March 09, 2011 2:17:21 pm Julian Bradfield wrote:
> >> > On 2011-03-09, Peter Constable <petercon@microsoft.com> wrote:
> >> > > From: David Starner [mailto:prosfilaes@gmail.com]
> >> > >
> >> > >> I don't understand your message.
> >> > >> http://babel.hathitrust.org/cgi/pt?id=mdp.39015017382519;page=root;
> >> > >> view= image;size=100;seq=15;num=7 shows a page from a book on the
> >> > >> duodecimal system that
> >> > >> uses two completely new characters for 10 and 11, that can
> >> > >> not be unified with any other characters in Unicode.
> >> > >
> >> > > If there are characters in established usage that are truly new and
> >> > > that cannot be unified with existing characters, then they can be
> >> > > considered for encoding. It's not clear to me that the characters on
> >> > > that page for ten and eleven satisfy those criteria. In particular,
> >> > > the character for ten appears to be nothing more than LATIN CAPITAL
> >> > > LETTER T. I can't tell what the letterform for eleven is--whether
> >> > > it's some kind of script l or a script-form ligature of e and l.
> >> >
> >> > Not at all. The numeral for ten is clearly NOT a LATIN CAPITAL LETTER
> >> > T - rather, it's a symbol that has been designed to be reminiscent of
> >> > but distinct from a T (compare it with the Ts on the same page);
> >> > similarly the eleven symbol is a special sort that is like L but not
> >> > the same. This is explained on page 15: (duodecimal), which since the
> >> > OCR doesn't understand non-decimal page numbers is reached by going to
> >> > (decimal) page 15 in the jump to page box.
> >> > Of course, as it says, T and L can be used if you don't have the
> >> > special sorts.
> >>
> >> More relevant, in my experience: how many people actually use this
> >> number system? The tonal number system (base 8*2) has entirely new
> >> digits for the high range, yet Unicode won't even consider encoding it
> >> without a large community of actual usage.
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