[liblouis-liblouisxml] Re: Bold Capital C
- From: "Neil Soiffer" <Neils@xxxxxxxxxx>
- To: liblouis-liblouisxml@xxxxxxxxxxxxx
- Date: Wed, 25 Jun 2008 15:13:23 -0700
I don't know what the proper thing to do in Nemeth is, but the "double
struck" characters are distinct from bold. Unicode has a range of bold math
symbols starting at 1D400. The double struck chars start at 1D538, but have
holes in them because some of the characters (such as the C) were already in
Unicode. There was/is debate as to whether it was wise for Unicode to leave
the holes, but that's a different email thread.
The point of these plane one characters is that they are semantically
distinct from the regular letters in that you may well mix various font
variants of a letter in a mathematical text and the reader is suppose to
understand that they have different meanings. This is great for
accessibility, but I'm sure Nemeth code covers them all... at least I don't
see anything appropriate listed in Appendix A of the "green" book, but that
is a pretty old book. I also don't see how Fraktur symbols are represented
in Nemeth.
Neil
On Wed, Jun 25, 2008 at 1:58 PM, Mike Sivill <mike.sivill@xxxxxxxxxxxx>
wrote:
> Hi John,
> I guess you're totally right to use the bold indicator. After reading that
> article, I understand what the letter actually looks like. Before, I
> thought
> it was like a C with a line drawn cross it twice or something. Now that I
> know it is meant to be bold, that's what it should be. One fallback of the
> unicode tables is that they sometimes use esoteric naming of characters in
> attempt at describing the character, instead of their real names.
> Mike
>
> -----Original Message-----
> From: liblouis-liblouisxml-bounce@xxxxxxxxxxxxx
> [mailto:liblouis-liblouisxml-bounce@xxxxxxxxxxxxx] On Behalf Of John J.
> Boyer
> Sent: Wednesday, June 25, 2008 1:23 PM
> To: liblouis-liblouisxml@xxxxxxxxxxxxx
> Subject: [liblouis-liblouisxml] Bold Capital C
>
> Here is a private message from Susan Jolly which contains a link to an
> interesting article. In view of this, it would seem better to use the
> bold typeform for the double-struck capital C. If I remember right, this
> would be 456-6-14. Vectors should be represented by small bold letters,
> for example, 456-136 and 456-1236.
>
> John
>
> ----- Forwarded message from Susan Jolly <easjolly@xxxxxxxxxxxxx> -----
>
> Subject: Double struck letters
> From: Susan Jolly <easjolly@xxxxxxxxxxxxx>
> Date: Wed, 25 Jun 2008 10:35:03 -0600
> To: "'John J. Boyer'" <john.boyer@xxxxxxxxxxxxxxxx>
>
> Hi John,
>
> I thought you might find this article on the origin of double struck
> letters
> interesting.
> http://en.wikipedia.org/wiki/Blackboard_bold
>
> My inclination would be to use the Nemeth bold capital letters rather than
> the script capital letters to distinguish these symbols.
>
> Susan
>
>
>
> ----- End forwarded message -----
>
> --
> John J. boyer; President, Chief Software Developer
> JJB Software, Inc.
> http://www.jjb-software.com
> Madison, WI USA
> Developing software for people with disabilities
>
> For a description of the software and to download it go to
> http://www.jjb-software.com
>
> For a description of the software and to download it go to
> http://www.jjb-software.com
>
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