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authorKarl Berry <karl@freefriends.org>2010-02-21 23:22:38 +0000
committerKarl Berry <karl@freefriends.org>2010-02-21 23:22:38 +0000
commit7d7ba4caf4c99713840f2466875c6dfcdfbdc156 (patch)
tree668112ea26b2ff741b9513e0ed5b7e9b8054394f /Master/texmf-dist/tex/latex/ltxmisc
parent254ef74e9993146e73cd8ce91ecf43f28da8ea41 (diff)
braket doc update, own package (21feb09)
git-svn-id: svn://tug.org/texlive/trunk@17127 c570f23f-e606-0410-a88d-b1316a301751
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-rw-r--r--Master/texmf-dist/tex/latex/ltxmisc/braket.sty93
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diff --git a/Master/texmf-dist/tex/latex/ltxmisc/braket.sty b/Master/texmf-dist/tex/latex/ltxmisc/braket.sty
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-% braket.sty Macros for Dirac bra-ket <|> notation and sets {|}
-% Donald Arseneau asnd@triumf.ca Last modified 12-Sept-2006.
-% This is free, unencumbered, unsupported software.
-%
-% Commands defined are:
-% \bra{ } \ket{ } \braket{ } \set{ } (small versions)
-% \Bra{ } \Ket{ } \Braket{ } \Set{ } (expanding versions)
-%
-% The "small versions" use fixed-size brackets independent of their
-% contents, whereas the "expanding versions" make the brackets and
-% vertical lines expand to envelop their contents (internally using
-% the \left and \right commands). You should use the vertical bar
-% character "|" to input any extra vertical lines. In \Braket these
-% vertical lines will expand to match the arguments, and in \Set the
-% first vertical will expand. E.g.,
-%
-% \Braket{ \phi | \frac{\partial^2}{\partial t^2} | \psi }
-% \Set{ x\in\mathbf{R}^2 | 0<{|x|}<5 }
-%
-% Likewise, you may make an expandable double-bar using either
-% the "\|" command or its local alias "||".
-%
-% NOT defined is "\ketbra" (for projection operators) because I prefer
-% \ket{ } \bra{ }.
-%
-% Because each definition is so small, it makes no sense to have a
-% complicated generic version for many bracket styles. Instead,
-% you can just copy the definitions and change \langle or \rangle,
-% to what you like.
-%
-\def\bra#1{\mathinner{\langle{#1}|}}
-\def\ket#1{\mathinner{|{#1}\rangle}}
-\def\braket#1{\mathinner{\langle{#1}\rangle}}
-\def\Bra#1{\left\langle#1\right|}
-\def\Ket#1{\left|#1\right\rangle}
-%
-\let\protect\relax
-%
-{\catcode`\|=\active
- \xdef\Braket{\protect\expandafter\noexpand\csname Braket \endcsname}
- \expandafter\gdef\csname Braket \endcsname#1{\begingroup
- \ifx\SavedDoubleVert\relax
- \let\SavedDoubleVert\|\let\|\BraDoubleVert
- \fi
- \mathcode`\|32768\let|\BraVert
- \left\langle{#1}\right\rangle\endgroup}
-}
-\def\BraVert{\@ifnextchar|{\|\@gobble}% turn || into \|
- {\egroup\,\mid@vertical\,\bgroup}}
-\def\BraDoubleVert{\egroup\,\mid@dblvertical\,\bgroup}
-\let\SavedDoubleVert\relax
-
-% The \mid@vertical is \vrule with ordinary TeX but \middle| in eTeX.
-% We always avoid a \mathchoice in making the inner vertical lines.
-% Note that \right\rangle is used now due to a failing in fourier.sty.
-%
-% \def\ketbra#1#2{\ket{#1}\bra{#2}}
-% \def\Ketbra#1#2{\left|{#1}\vphantom{#2}\right\rangle\left\langle{#2}\vphantom{#1}\right|}
-
-% \Set{...|...} Only the first | is treated specially.
-{\catcode`\|=\active
- \xdef\set{\protect\expandafter\noexpand\csname set \endcsname}
- \expandafter\gdef\csname set \endcsname#1{\mathinner
- {\lbrace\,{\mathcode`\|32768\let|\midvert #1}\,\rbrace}}
- \xdef\Set{\protect\expandafter\noexpand\csname Set \endcsname}
- \expandafter\gdef\csname Set \endcsname#1{\left\{%
- \ifx\SavedDoubleVert\relax \let\SavedDoubleVert\|\fi
- \:{\let\|\SetDoubleVert
- \mathcode`\|32768\let|\SetVert
- #1}\:\right\}}
-}
-\def\midvert{\egroup\mid\bgroup}
-\def\SetVert{\@ifnextchar|{\|\@gobble}% turn || into \|
- {\egroup\;\mid@vertical\;\bgroup}}
-\def\SetDoubleVert{\egroup\;\mid@dblvertical\;\bgroup}
-
-% If the user is using e-TeX with its \middle primitive, use that for
-% verticals instead of \vrule.
-%
-\begingroup
- \edef\@tempa{\meaning\middle}
- \edef\@tempb{\string\middle}
-\expandafter \endgroup \ifx\@tempa\@tempb
- \def\mid@vertical{\middle|}
- \def\mid@dblvertical{\middle\SavedDoubleVert}
-\else
- \def\mid@vertical{\mskip1mu\vrule\mskip1mu}
- \def\mid@dblvertical{\mskip1mu\vrule\mskip2.5mu\vrule\mskip1mu}
-\fi
-
-% May 2005: Double verticals; tweak spacing.
-% June 2005: Make robust
-% Sept 2006: fourier