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1 | % \begin{meta-comment} <general public licence> |
2 | %% |
3 | %% mdwthm package -- standard theorem stuff |
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4 | %% Copyright (c) 2001--2003, 2006, 2008 Mark Wooding |
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5 | %% |
6 | %% This program is free software; you can redistribute it and/or modify |
7 | %% it under the terms of the GNU General Public License as published by |
8 | %% the Free Software Foundation; either version 2 of the License, or |
9 | %% (at your option) any later version. |
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10 | %% |
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11 | %% This program is distributed in the hope that it will be useful, |
12 | %% but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | %% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | %% GNU General Public License for more details. |
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15 | %% |
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16 | %% You should have received a copy of the GNU General Public License |
17 | %% along with this program; if not, write to the Free Software Foundation, |
18 | %% Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
19 | % \end{meta-comment} |
20 | % |
21 | % \begin{meta-comment} <Package preambles> |
22 | %<+package>\NeedsTeXFormat{LaTeX2e} |
23 | %<+package>\ProvidesPackage{mdwthm} |
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24 | %<+package> [2020/09/06 1.14.0 Theorem typesetting] |
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25 | %<+thmstyle>\ProvidesFile{mdwmargin.thm} |
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26 | %<+thmstyle> [2020/09/06 1.14.0 Numbers-in-the-margin theorem style] |
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27 | % \end{meta-comment} |
28 | % |
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29 | % \CheckSum{204} |
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30 | %% \CharacterTable |
31 | %% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z |
32 | %% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z |
33 | %% Digits \0\1\2\3\4\5\6\7\8\9 |
34 | %% Exclamation \! Double quote \" Hash (number) \# |
35 | %% Dollar \$ Percent \% Ampersand \& |
36 | %% Acute accent \' Left paren \( Right paren \) |
37 | %% Asterisk \* Plus \+ Comma \, |
38 | %% Minus \- Point \. Solidus \/ |
39 | %% Colon \: Semicolon \; Less than \< |
40 | %% Equals \= Greater than \> Question mark \? |
41 | %% Commercial at \@ Left bracket \[ Backslash \\ |
42 | %% Right bracket \] Circumflex \^ Underscore \_ |
43 | %% Grave accent \` Left brace \{ Vertical bar \| |
44 | %% Right brace \} Tilde \~} |
45 | %% |
46 | % |
47 | % \begin{meta-comment} |
48 | % |
49 | %<*driver> |
50 | \input{mdwtools} |
51 | \describespackage{mdwthm} |
52 | \mdwdoc |
53 | %</driver> |
54 | % |
55 | % \end{meta-comment} |
56 | % |
57 | %^^A------------------------------------------------------------------------- |
58 | % \section{User guide} |
59 | % |
60 | % \subsection{Environments provided} |
61 | % |
62 | % \DescribeEnv{theorem} |
63 | % \DescribeEnv{lemma} |
64 | % \DescribeEnv{proposition} |
65 | % \DescribeEnv{corollary} |
66 | % \DescribeEnv{definition} |
67 | % \DescribeEnv{example} |
68 | % \DescribeEnv{fact} |
69 | % \DescribeEnv{remark} |
70 | % \DescribeEnv{note} |
71 | % The package defines a collection of theorem environments, declared in the |
72 | % usual way. All of them except \env{claim} share the same counter. If the |
73 | % document class has a |\chapter| command, then they are numbered within the |
74 | % chapter; otherwise there is a single numbering system throughout the |
75 | % document. |
76 | % |
77 | % Every environment has a $*$-version, which doesn't print a number. This |
78 | % might be useful every now and then. |
79 | % |
80 | % The environments \env{theorem}, \env{lemma}, \env{proposition}, |
81 | % \env{claim}and \env{corollary} are set using the `plain' style, with the |
82 | % body text in \textit{italics}. The environments \env{definition} and |
83 | % \env{example} are set in the `definition' style, with body text in roman. |
84 | % The remaining environments, \env{fact}, \env{remark}, and \env{note} are |
85 | % set in the `remark' style. |
86 | % |
87 | % \DescribeEnv{claim} |
88 | % \DescribeEnv{proof} |
89 | % The \env{claim} environment has its own counter, which is reset at the |
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90 | % beginning of the \env{proof} environment. If you say |\qed| in a |
91 | % \env{proof} environment then it uses your symbol; otherwise it adds its own |
92 | % at the end. |
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93 | % |
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94 | % \subsection{Options} |
95 | % |
96 | % The package takes an option \syntax{"within="<counter>} -- number theorems |
97 | % within \<counter>. If this isn't given, a default is chosen -- either |
98 | % numbering in chapters, or global numbering. The \lit*{notwithin} option |
99 | % forces global numbering. |
100 | % |
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101 | % \subsection{The \package{mdwmargin} style} |
102 | % |
103 | % This package also provides a pretty `number-hanging-in-the-margin' theorem |
104 | % style collection, available under the name \env{mdwmargin}. |
105 | % |
106 | % \implementation |
107 | % |
108 | % |
109 | %^^A------------------------------------------------------------------------- |
110 | % \section{Implementation of the environments} |
111 | % |
112 | % \begin{macrocode} |
113 | %<*package> |
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114 | \RequirePackage{mdwkey} |
115 | \if1% |
116 | \ifx\if@article\iftrue0 |
117 | \else\ifx\chapter\@@undefined0 |
118 | \else\ifx\chapter\relax0 |
119 | \else1\fi\fi\fi |
120 | \def\mt@within{[chapter]} |
121 | \else |
122 | \def\mt@within{} |
123 | \fi |
124 | \mkdef{mdwthm:opt}{within}{\def\mt@within{[#1]}} |
125 | \mkdef{mdwthm:opt}{notwithin}*{\def\mt@within{}} |
126 | \mkdef*{mdwthm:opt}{\PassOptionsToPackage{#1=#2}{amsthm}} |
127 | \mkdef*{mdwthm:opt}*{\PassOptionsToPackage{#1}{amsthm}} |
128 | \def\mt@opt#1{\mkparse{mdwthm:opt}{#1}} |
129 | \DeclareOption*{\expandafter\mt@opt\expandafter{\CurrentOption}} |
130 | \ProcessOptions |
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131 | \RequirePackage{amsthm} |
132 | % \end{macrocode} |
133 | % |
134 | % \subsection{The simple bits} |
135 | % |
136 | % \begin{environment}{theorem} |
137 | % |
138 | % Do the right thing with the numbering rules. |
139 | % |
140 | % \begin{macrocode} |
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141 | \edef\next@{\noexpand\newtheorem{theorem}{Theorem}\mt@within}\next@ |
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142 | \newtheorem*{theorem*}{Theorem} |
143 | % \end{macrocode} |
144 | % |
145 | % \end{environment} |
146 | % |
147 | % \begin{environment}{lemma} |
148 | % \begin{environment}{proposition} |
149 | % \begin{environment}{corollary} |
150 | % \begin{environment}{claim} |
151 | % \begin{environment}{definition} |
152 | % \begin{environment}{example} |
153 | % \begin{environment}{fact} |
154 | % \begin{environment}{remark} |
155 | % |
156 | % Most of this is very easy. |
157 | % |
158 | % \begin{macrocode} |
159 | \theoremstyle{plain} |
160 | \newtheorem{lemma}[theorem]{Lemma} |
161 | \newtheorem*{lemma*}{Lemma} |
162 | \newtheorem{proposition}[theorem]{Proposition} |
163 | \newtheorem*{proposition*}{Proposition} |
164 | \newtheorem{corollary}[theorem]{Corollary} |
165 | \newtheorem*{corollary*}{Corollary} |
166 | \newtheorem{fact}[theorem]{Fact} |
167 | \newtheorem*{fact*}{Fact} |
168 | \newtheorem{claim}{Claim} |
169 | \newtheorem*{claim*}{Claim} |
170 | % \end{macrocode} |
171 | % |
172 | % \begin{macrocode} |
173 | \theoremstyle{definition} |
174 | \newtheorem{definition}[theorem]{Definition} |
175 | \newtheorem*{definition*}{Definition} |
176 | \newtheorem{example}[theorem]{Example} |
177 | \newtheorem*{example*}{Example} |
178 | % \end{macrocode} |
179 | % |
180 | % \begin{macrocode} |
181 | \theoremstyle{remark} |
182 | \newtheorem{remark}[theorem]{Remark} |
183 | \newtheorem*{remark*}{Remark} |
184 | % \end{macrocode} |
185 | % |
186 | % \end{environment} |
187 | % \end{environment} |
188 | % \end{environment} |
189 | % \end{environment} |
190 | % \end{environment} |
191 | % \end{environment} |
192 | % \end{environment} |
193 | % \end{environment} |
194 | % |
195 | % \begin{environment}{note} |
196 | % |
197 | % Someone else might also have a \env{note} environment. Be careful. |
198 | % |
199 | % \begin{macrocode} |
200 | \ifx\note\@@undefined |
201 | \newtheorem{note}[theorem]{Note} |
202 | \newtheorem*{note*}{Note} |
203 | \fi |
204 | % \end{macrocode} |
205 | % |
206 | % \end{environment} |
207 | % |
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208 | % \begin{macro}{\@qedhack} |
209 | % |
210 | % Make |\qed| idempotent. |
211 | % |
212 | % \begin{macrocode} |
213 | \newif\if@qedsw |
214 | \def\@qedhack{% |
215 | \let\@qed@\qed% |
216 | \global\@qedswtrue% |
217 | \def\qed{\if@qedsw\global\@qedswfalse\expandafter\@qed@\fi}% |
218 | } |
219 | % \end{macrocode} |
220 | % |
221 | % \end{macro} |
222 | % |
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223 | % \begin{environment}{proof} |
224 | % |
225 | % Now to hack the proof environment. |
226 | % |
227 | % \begin{macrocode} |
228 | \renewenvironment{proof}[1][\proofname]{% |
229 | \setcounter{claim}{0}% |
230 | \par\normalfont% |
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231 | \ifdim\topsep<\parskip\topsep\parskip\fi% |
232 | \ifdim\@topsepadd<\z@\@topsepadd\z@\fi% |
233 | \trivlist\advance\itemindent\labelsep\let\makelabel\proofstyle% |
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234 | \advance\@topsep-\parskip% |
235 | \advance\@topsepadd-\parskip% |
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236 | \@qedhack% |
237 | \item[#1]% |
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238 | }{% |
239 | \qed\endtrivlist% |
240 | } |
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241 | % \end{macrocode} |
242 | % \end{environment} |
243 | % |
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244 | % \begin{macro}{\proofstyle} |
245 | % |
246 | % The |\proofstyle| macro is just a style hook for typesetting the `Proof' |
247 | % label. |
248 | % |
249 | % \begin{macrocode} |
250 | \providecommand\proofstyle[1]{\textit{#1.}} |
251 | % \end{macrocode} |
252 | % |
253 | % \end{macro} |
254 | % |
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255 | % Done. |
256 | % |
257 | % \begin{macrocode} |
258 | %</package> |
259 | % \end{macrocode} |
260 | % |
261 | %^^A------------------------------------------------------------------------- |
262 | % \section{Implementation of the theorem style} |
263 | % |
264 | % \begin{macrocode} |
265 | %<*thmstyle> |
266 | % \end{macrocode} |
267 | % |
268 | % \begin{macro}{\thmhead@margin} |
269 | % |
270 | % Firstly, a macro to typeset the theorem environment header, with the number |
271 | % in the margin. |
272 | % |
273 | % \begin{macrocode} |
274 | \def\thmhead@margin#1#2#3{% |
275 | \thmnumber{\llap{#2{\normalsize\quad}}}% |
276 | \thmname{#1}% |
277 | \thmnote{ \the\thm@notefont(#3)}% |
278 | } |
279 | % \end{macrocode} |
280 | % \end{macro} |
281 | % |
282 | % \begin{macro}{\thm@headfont@margin} |
283 | % |
284 | % Now to decide on the header font. Definitely we want boldface; if the |
285 | % documentclass (or \package{mdwfonts}) has decided on a different font |
286 | % family for the headings, then we use that. |
287 | % |
288 | % \begin{macrocode} |
289 | \def\thm@headfont@margin{% |
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290 | \fontseries{\bfdefault}% |
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291 | \ifx\headdefault\@@undfined\else\fontfamily\headdefault\fi% |
292 | \selectfont% |
293 | } |
294 | % \end{macrocode} |
295 | % \end{macro} |
296 | % |
297 | % \begin{macro}{\qedsymbol} |
298 | % |
299 | % Use the nice symbol if available. |
300 | % |
301 | % \begin{macrocode} |
302 | \AtBeginDocument{\ifx\square\@@undefined\else\def\qedsymbol{$\square$}\fi} |
303 | % \end{macrocode} |
304 | % \end{macro} |
305 | % |
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306 | % \begin{macro}{\proofstyle} |
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307 | % |
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308 | % Typeset `Proof' in bold face. |
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309 | % |
310 | % \begin{macrocode} |
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311 | \def\proofstyle#1{{\thm@headfont@margin#1}} |
312 | % \end{macrocode} |
313 | % |
314 | % \end{macro} |
315 | % |
316 | % \begin{macro}{\th@base} |
317 | % \begin{macro}{\@endtheorem} |
318 | % |
319 | % The |\th@base| macro provides the basis for our theorem style. The |
320 | % argument is something to do at the end of the environment. |
321 | % |
322 | % \begin{macrocode} |
323 | \def\th@base#1{% |
324 | \let\thmhead\thmhead@margin% |
325 | \thm@headfont{\thm@headfont@margin}% |
326 | \thm@headpunct{}% |
327 | \advance\thm@postskip-\parskip% |
328 | \@qedhack% |
329 | \def\after@thm{#1}% |
330 | \normalfont% |
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331 | } |
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332 | % \end{macrocode} |
333 | % |
334 | % Ah, but nobody actually does anything with |\after@thm|. Let's fix that. |
335 | % |
336 | % \begin{macrocode} |
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337 | \AtEndOfPackage{\def\@endtheorem{\after@thm\endtrivlist}} |
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338 | % \end{macrocode} |
339 | % \end{macro} |
340 | % \end{macro} |
341 | % |
342 | % \begin{macro}{\th@plain} |
343 | % \begin{macro}{\th@definition} |
344 | % \begin{macro}{\th@remark} |
345 | % |
346 | % Now this is easy. The space hacking in |\th@remark| is straight from |
347 | % \package{amsthm}. |
348 | % |
349 | % \begin{macrocode} |
350 | \AtBeginDocument{ |
351 | \def\th@plain{\th@base\relax\itshape} |
352 | \def\th@definition{\th@base\qed} |
353 | \def\th@remark{% |
354 | \th@base\qed% |
355 | \thm@preskip\topsep\divide\thm@preskip\tw@% |
356 | \thm@postskip\thm@preskip% |
357 | } |
358 | } |
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359 | %</thmstyle> |
360 | % \end{macrocode} |
361 | % \end{macro} |
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362 | % \end{macro} |
363 | % \end{macro} |
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364 | % |
365 | % \hfill Mark Wooding, \today |
366 | % \Finale |
367 | % |
368 | \endinput |