org-entities-user

org-entities-user

[Nathaniel Flath]

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Hello,
I've been setting up org-entities-user with a few custom symbols, and
managed to get a few aliases for items already in org-entities, but i'm a
bit stuck on adding new items - specifically, the mathbb versions of Z and R
(the symbols for the sets of integers and reals).  I can't seem to find the
UTF-8, latin-1, or HTML encodings of these entities - and I'm not sure how
to input the utf-8 or latin-1 even if I do.  Does anyone know how to do
this?

Thanks,
Nathaniel Flath

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Re: org-entities-user

[Ulf Stegemann]

Dear Nathaniel,

Nathaniel Flath <flat0103@gmail.com> wrote:

> I've been setting up org-entities-user with a few custom symbols, and
> managed to get a few aliases for items already in org-entities, but i'm a
> bit stuck on adding new items - specifically, the mathbb versions of Z and R
> (the symbols for the sets of integers and reals).  I can't seem to find the
> UTF-8, latin-1, or HTML encodings of these entities - and I'm not sure how
> to input the utf-8 or latin-1 even if I do.  Does anyone know how to do
> this?

there's nothing like a blackboard or double-struck R and Z in latin-1
(and ASCII) so you will need to live with a transcription like `R' or
`REALS' &c.

In unicode these characters are called `double-struck capital r' and
`double-struck capital z' and they have the hex values 211d and 2124
respectively. In Emacs you can enter them with `C-x 8 RET 211d RET' or
`C-x 8 RET double-struck capital r RET'.

The corresponding XML (XHTML) entities are `&reals;' or `&Ropf;' and
`&integers;' or `&Zopf;' respectively. However, at least latest firefox
does not know how to render these and outputs these entities literally so
you might prefer to go for a transcription as well or use a unicode page
encoding with the appropriate unicode characters.

In case you are interested in further blackboard characters, w3c has a
nice page about double-struck entities. Find it at
http://www.w3.org/TR/xml-entity-names/double-struck.html.

HTH,

Ulf

Re: org-entities-user

[Christian Moe]

Hi,


Nathaniel Flath wrote:
> Hello,
> I've been setting up org-entities-user with a few custom symbols, and 
> managed to get a few aliases for items already in org-entities, but i'm 
> a bit stuck on adding new items - specifically, the mathbb versions of Z 
> and R (the symbols for the sets of integers and reals).  I can't seem to 
> find the UTF-8, latin-1, or HTML encodings of these entities - and I'm 
> not sure how to input the utf-8 or latin-1 even if I do.  Does anyone 
> know how to do this?

Yes, google... :)
The search string `symbol Z "set of integers" utf8' gives you a nice 
first hit.

HTML entities for double-struck capital Z and R are:

R: ℝ (decimal), ℝ (hex)
Z: ℤ (decimal), ℤ (hex)

Latin-1 does not support these characters. Fall back on plain "Z" and 
"R" or use a description like "[set of integers]".

To type in the character in Windows, hold down the Alt key while typing 
the hex code, e.g. `211d' for R. On the Mac, open the Character Palette 
and jump to Letterlike Symbols.

In Emacs, you can select the Unicode input method with

`C-x <RET> C-\ ucs <RET>'

Then typing U followed by the hex code, `U211d', will get you the 
double-struck R.



Christian Moe

Re: org-entities-user

[Darlan Cavalcante Moreira]

You can also type
,----
! C-x 8 RET
`----
and then the hex code, instead of changing the input method in Emacs. .
For instance,
,----
! C-x 8 RET 221d
`----

Darlan

At Thu, 20 May 2010 09:53:31 +0200,
Christian Moe <mail@christianmoe.com> wrote:
> 
> Hi,
> 
> 
> Nathaniel Flath wrote:
> > Hello,
> > I've been setting up org-entities-user with a few custom symbols, and 
> > managed to get a few aliases for items already in org-entities, but i'm 
> > a bit stuck on adding new items - specifically, the mathbb versions of Z 
> > and R (the symbols for the sets of integers and reals).  I can't seem to 
> > find the UTF-8, latin-1, or HTML encodings of these entities - and I'm 
> > not sure how to input the utf-8 or latin-1 even if I do.  Does anyone 
> > know how to do this?
> 
> Yes, google... :)
> The search string `symbol Z "set of integers" utf8' gives you a nice 
> first hit.
> 
> HTML entities for double-struck capital Z and R are:
> 
> R: &#8477; (decimal), &#x211d; (hex)
> Z: &#8484; (decimal), &#x2124; (hex)
> 
> Latin-1 does not support these characters. Fall back on plain "Z" and 
> "R" or use a description like "[set of integers]".
> 
> To type in the character in Windows, hold down the Alt key while typing 
> the hex code, e.g. `211d' for R. On the Mac, open the Character Palette 
> and jump to Letterlike Symbols.
> 
> In Emacs, you can select the Unicode input method with
> 
> `C-x <RET> C-\ ucs <RET>'
> 
> Then typing U followed by the hex code, `U211d', will get you the 
> double-struck R.
> 
> 
> 
> Christian Moe
> 
> _______________________________________________
> Emacs-orgmode mailing list
> Please use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
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Re: org-entities-user

[Eric S Fraga]

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On Thu, 20 May 2010 10:26:08 +0200, Darlan Cavalcante Moreira <darcamo@gmail.com> wrote:
> 
> At Thu, 20 May 2010 09:53:31 +0200,
> Christian Moe <mail@christianmoe.com> wrote:
> > 
> > Hi,
> > 
> > 
> > Nathaniel Flath wrote:
> > > Hello,
> > > I've been setting up org-entities-user with a few custom symbols, and 
> > > managed to get a few aliases for items already in org-entities, but i'm 
> > > a bit stuck on adding new items - specifically, the mathbb versions of Z 
> > > and R (the symbols for the sets of integers and reals).  I can't seem to 
> > > find the UTF-8, latin-1, or HTML encodings of these entities - and I'm 
> > > not sure how to input the utf-8 or latin-1 even if I do.  Does anyone 
> > > know how to do this?
> > 
> > Yes, google... :)
> > The search string `symbol Z "set of integers" utf8' gives you a nice 
> > first hit.
> > 
> > HTML entities for double-struck capital Z and R are:
> > 
> > R: &#8477; (decimal), &#x211d; (hex)
> > Z: &#8484; (decimal), &#x2124; (hex)
> > 
> > Latin-1 does not support these characters. Fall back on plain "Z" and 
> > "R" or use a description like "[set of integers]".
> > 
> > To type in the character in Windows, hold down the Alt key while typing 
> > the hex code, e.g. `211d' for R. On the Mac, open the Character Palette 
> > and jump to Letterlike Symbols.
> > 
> > In Emacs, you can select the Unicode input method with
> > 
> > `C-x <RET> C-\ ucs <RET>'
> > 
> > Then typing U followed by the hex code, `U211d', will get you the 
> > double-struck R.
> 
> 
> You can also type
> ,----
> ! C-x 8 RET
> `----
> and then the hex code, instead of changing the input method in Emacs. .
> For instance,
> ,----
> ! C-x 8 RET 221d
> `----
> 
> Darlan

For those of you that are latex users and who cannot remember all
these special codes, one of the best input methods in Emacs is the
"tex" mode which allows you to simply type in \alpha to get α or,
given the original question, \Bbb{R} or \Bbb{Z} to get ℝ or ℤ.  If you
"M-x describe-input-method RET tex RET", you'll get all the special
key sequences it knows (the same obviously applies to the ucs input
method, of course).

HTH,
eric


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MC .  -.. --- -  ..-. .-. .- --. .-  .- -  ..- -.-. .-..  .- -.-.  ..- -.-
NL Professor Eric S Fraga, UCL, http://www.homepages.ucl.ac.uk/~ucecesf/
PG Fingerprint: 8F5C 279D 3907 E14A 5C29  570D C891 93D8 FFFC F67D
BF >++++++++++[>++++++++++>+++++++++++[<]>-]>++.>++++.<-----.++++++.------.

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