From e0c6872cf40896c7be36b11dcc744620f10adf1d Mon Sep 17 00:00:00 2001
From: Norbert Preining <norbert@preining.info>
Date: Mon, 2 Sep 2019 13:46:59 +0900
Subject: Initial commit

---
 info/symbols/blackboard/blackboard.tex | 110 +++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 info/symbols/blackboard/blackboard.tex

(limited to 'info/symbols/blackboard/blackboard.tex')

diff --git a/info/symbols/blackboard/blackboard.tex b/info/symbols/blackboard/blackboard.tex
new file mode 100644
index 0000000000..37d033eb9e
--- /dev/null
+++ b/info/symbols/blackboard/blackboard.tex
@@ -0,0 +1,110 @@
+%
+% This is the source file for blackboard.ps .
+% blackboard.ps is supposed to help you choose the
+% appropriate blackboard bold font for your document.
+%
+% Unless you intend to change this file (which is perfectly ok)
+% you should probably get blackboard.ps directly.
+% It should be on the ftp site where you got this file from.
+% That will save you installing all the fonts.
+%
+% This file is in the public domain. You may do everything
+% with it, including, but not limited to, printing it
+% and folding paper planes with the results.
+%
+% This file is unsupported. If you want to support it, go ahead.
+%
+\let\noinit!
+\input testfont
+
+\def\testds#1{%
+  \def\fontname{#1}%
+  \startfont
+  \table
+
+  \vskip 1cm
+  \font\dsfnt=#1
+  $$\hbox{\dsfnt N}\subset\hbox{\dsfnt Z}\subset\hbox{\dsfnt Q}\subset
+    \hbox{\dsfnt R}\subset\hbox{\dsfnt C}$$
+
+  $$\forall x\in\hbox{\dsfnt N}:x+x\in \hbox{\dsfnt N}$$
+
+  \vskip 1cm
+
+  \font\dsfnt=#1 scaled 4000
+  \centerline{\dsfnt N Z Q R C}\rm
+
+  \vskip 1cm
+}
+
+This is a test file for the various implementations of
+blackboard bold typefaces in \TeX.
+It was written by Olaf Kummer during July 1998.
+It is unsupported.
+
+Using this file you can preview the different fonts
+in a postscript file without actually installing all the
+fonts. This might help you in choosing a font that is
+most appropriate for your task.
+The author has prepared a blackboard bold font himself,
+but he hopes that this file shows as little prejudice as 
+possible.
+
+{\tt testfont.tex} was used to prepare the font tables
+in this document.
+
+\eject
+
+\testds{bbold10}
+
+This is the {\tt bbold} font created by Alan Jeffrey 
+({\tt alanje@cogs.susx.ac.uk}). It can be found on CTAN
+at {\tt /tex-archive/fonts/bbold}.
+
+\eject
+
+\testds{dsrom10}
+
+This is the {\tt dsrom} font created by Olaf Kummer
+({\tt kummer@informatik.uni-hamburg.de}). It can be found on CTAN
+at {\tt /tex-archive/fonts/doublestroke}.
+
+\eject
+
+\testds{dsss10}
+
+This is the {\tt dsss} font created by Olaf Kummer
+({\tt kummer@informatik.uni-hamburg.de}). It can be found on CTAN
+at {\tt /tex-archive/fonts/doublestroke}.
+
+\eject
+
+\testds{bbm10}
+
+This is the {\tt bbm} font created by Gilles F. Robert
+({\tt gfrobert@umpa.ens-lyon.fr}). It can be found on CTAN
+at {\tt /tex-archive/fonts/cm/bbm}. On the following pages 
+a few of the many variants of the {\tt bbm} font are
+presented.
+
+\eject
+
+\testds{bbmbx10}
+
+\eject
+
+\testds{bbmsl10}
+
+\eject
+
+\testds{bbmss10}
+
+\eject
+
+\testds{msbm10}
+
+This is the classical AMS font {\tt msbm} 
+reachead via the {\tt\char 92 mathbb}
+command. It is usually distributed with every \TeX\ system.
+
+\bye
-- 
cgit v1.2.3

