RE: symbols for `born' and `died'

2003-02-24 Thread Handwerker, Reinhard (ISS Atlanta)
Correct, but this is actually the symbol being used in German typography where 
available. Otherwise "oo" is being used as this genealogical symbol.

See http://www.genealogienetz.de/reg/BRG/neumark/unicode2.htm (sic!)


Reinhard G. Handwerker, Sr. i18n Engineer
tel: +1 404 236 3092  
Internet Security Systems, Inc, +1 404 236 2600 
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-Original Message-
From: Michael Everson [mailto:[EMAIL PROTECTED]
Sent: Monday, February 24, 2003 13:07
To: Markus Scherer
Cc: unicode
Subject: Re: symbols for `born' and `died'


At 09:18 -0800 2003-02-24, Markus Scherer wrote:
>Werner LEMBERG wrote:
>>...  Similarly, the year of marriage is
>>depicted as two intertwined circles.  How will this be represented in
>>Unicode?  Are there characters for it?
>
>For the marriage symbol, U+221E INFINITY should work fine - and 
>quite appropriately.

The infinity symbol is not two intelocked rings; it is a single loop.
-- 
Michael Everson * * Everson Typography *  * http://www.evertype.com




RE: symbols for `born' and `died' + guarani sign

2003-02-24 Thread Handwerker, Reinhard (ISS Atlanta)
re: U+238C UNDO SYMBOL

James,
technically, only the Vatican can do this.
You're not becoming un-married again - but divorced (that's a different state, and 
like burnt toast can't be undone) ...

best regards,
Reinhard


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Monday, February 24, 2003 12:00
To: Handwerker, Reinhard (ISS Atlanta)
Cc: Doug Ewell; Unicode Mailing List; Werner LEMBERG
Subject: RE: symbols for `born' and `died' + guarani sign


.
Reinhard Handwerker wrote,

> Indeed, one could go a step further and introduce (?) a symbol for divorced:
> Either one of the following offers itself as a candidate:
> U+29DC INCOMPLETE INFINITY
> U+29DE INFINITY NEGATED WITH VERTICAL BAR

How about U+238C ?

Best regards,

James Kass
.



RE: symbols for `born' and `died' + guarani sign

2003-02-24 Thread Handwerker, Reinhard (ISS Atlanta)
For the "married" symbol use the mathematical "infinity" symbol: U+221E (no pun 
intended).
Indeed, one could go a step further and introduce (?) a symbol for divorced:
Either one of the following offers itself as a candidate:
U+29DC INCOMPLETE INFINITY
U+29DE INFINITY NEGATED WITH VERTICAL BAR

- - - - -
Reinhard G. Handwerker, Sr. i18n Engineer
Internet Security Systems, Inc, +1 404 236 2600 
Go [EMAIL PROTECTED]   
ISS: The Power To Protect

-Original Message-
From: Doug Ewell [mailto:[EMAIL PROTECTED]
Sent: Sunday, February 23, 2003 14:27
To: Unicode Mailing List
Cc: Werner LEMBERG
Subject: Re: symbols for `born' and `died' + guarani sign


Werner LEMBERG  wrote:

> At least in Germany it is quite common to indicate the birth year with
> a leading black five-pointed star and the death year with a leading
> cross, resembling a dagger.  Similarly, the year of marriage is
> depicted as two intertwined circles.  How will this be represented in
> Unicode?  Are there characters for it?

and also:

> I've found a glyph in Jörg Knappen's TC fonts (text companion fonts
> for his EC font family for TeX) called `guarani sign' for the currency
> of Paraguay.  It is a capital letter G with a vertical bar through the
> whole glyph.

I think the "five-pointed star" used to denote a birth year is just an
asterisk, U+002A.  If you need something that really looks like a
five-pointed star, try U+2605.

The dagger representing a death year is U+2020.  Ken Whistler had a
pertinent comment on this particular case:

http://www.unicode.org/mail-arch/unicode-ml/y2002-m10/0447.html

Remember that these are just symbols, so rather than requiring a new
symbol with your particular semantics, it's OK to find something already
encoded that "looks right" and use it (an exception to Jukka Korpela's
otherwise-sound advice).

I can't find the two intertwined circles or the G with vertical bar, so
these *may* be candidates for encoding in a future version of Unicode if
a proper proposal is written and accepted.  (These e-mail discussions do
not constitute a proposal, though they may be the foundation for one.)
In the meantime, I'd just use "PYG" for the Paraguayan currency symbol.

-Doug Ewell
 Fullerton, California
 http://users.adelphia.net/~dewell/






RE: Latin digraph characters

2001-02-28 Thread Handwerker, Reinhard (ISS Atlanta)

William,
I can only second your assumption for naming the Chebyshev polynomials Tx(),
since the German transliteration is indeed Tschebyscheff (as the
mathematician in me remembers...).

FYI, there is one cyrillic character (U+0429: ?) that is transliterated as
SCHTSCH (in German),
a few years ago there was one Nathan Tcharansky (Schtscharanski in German).

getting a little [OT] now...

Reinhard G. Handwerker, 
Sr. i18n Engineer 
Internet Security Systems

-Original Message-
From: William Overington [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 28, 2001 13:14
To: Unicode List
Cc: [EMAIL PROTECTED]
Subject: Re: Latin digraph characters


>
>Germans transliterate a single cyrillic letter with TSCH, shouldn't
>Unicode have also this tetragraph encoded?  (ducking...)
>


Is this the Cyrillic letter that is transliterated into English as CH
pronounced as CH in church?

There are in mathematics some polynomials called Chebyshev polynomials after
a mathematician whose name was written in Cyrillic characters.  I think that
he was Russian, but I am not congruently certain of that.

I remember seeing once that his name is sometimes expressed in roman
characters as Chebyshev and sometimes in another way that I do not precisely
remember and will not guess at but it began with the letter T.

It is an interesting circumstance that Chebyshev polynomials are represented
as

y = T0(x)
y = T1(x)
y = T2(x)
y = T3(x)
and so on for all non-negative integers, where the number following the
letter T should be written as a subscript and are not done so here because
of the limitations of this email format.

Perhaps there is some interesting footnote to this circumstance and that
maybe the T refers to the mathematician's surname and that for some
peculiarity of history of different routes being used at different times his
surname was transliterated by one method for defining the functions and by
another method for stating his name.

Does anyone know whether there is any evidence of that being the case?

William Overington

28 February 2001





RE: bijective (was re: An Absurdly Brief Introduction to Unicode

2001-02-26 Thread Handwerker, Reinhard (ISS Atlanta)

Peter,
that's not correct, either.
A function (by definition) does not leave out any values in its domain (or
it is not well-defined).
If a function maps every point of its domain one-to-one into the codomain,
it is injective. 
If a function maps every point of its domain onto the codomain (i.e.
assuming every point in the codomain) , it is surjective. 
If a function is both injective and surjective, it is bijective. 
Only a bijective function has an inverse function defined on its codomain.

Reinhard G. Handwerker, Sr. i18n Engineer 
Internet Security Systems, Inc < http://www.iss.net/> +1 404 236 2600 
6303 Barfield Rd,  Atlanta, GA 30328, U.S.A. 
Go i18n@ISS!   
The Power To Protect

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 26, 2001 10:19
To: Unicode List
Subject: Re: bijective (was re: An Absurdly Brief Introduction to
Unicode (was



On 02/24/2001 04:43:41 PM Richard Cook wrote:

>Whence does this terminology derive? Set or Mapping theory?

I learned it in high school algebra.


>Anyone
>recommend a definitive text?

I have handy the book from a topology course I took that gives definitions:
Munkres, James A. 1975. Topology: A first course. Prentice-Hall.


>I imagine there are more such terms ...

Of terms, there is no end.


>e.g., what is it called if there are elements left over in the domain
>(but not in the codomain)? "Ejective"? I'm feeling "Dejective" for not
>knowing these terms already ...

But at least you recognised something that was likely to have been given a
name: surjective.



- Peter


---
Peter Constable

Non-Roman Script Initiative, SIL International
7500 W. Camp Wisdom Rd., Dallas, TX 75236, USA
Tel: +1 972 708 7485
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