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-rw-r--r--macros/latex/contrib/homework/DEPENDS.txt1
-rw-r--r--macros/latex/contrib/homework/LICENSE416
-rw-r--r--macros/latex/contrib/homework/README.md100
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-rw-r--r--macros/latex/contrib/homework/homework-demo-en.tex57
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-rw-r--r--macros/latex/contrib/homework/homework.cls147
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+hard einfart \ No newline at end of file
diff --git a/macros/latex/contrib/homework/LICENSE b/macros/latex/contrib/homework/LICENSE
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+The LaTeX Project Public License
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+
+LPPL Version 1.3c 2008-05-04
+
+Copyright 1999 2002-2008 LaTeX3 Project
+ Everyone is allowed to distribute verbatim copies of this
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+
+
+PREAMBLE
+========
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+WHETHER AND HOW TO DISTRIBUTE WORKS UNDER THIS LICENSE
+======================================================
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+Choosing This License or Another License
+----------------------------------------
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+Derived Works That Are Not Replacements
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+Important Recommendations
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diff --git a/macros/latex/contrib/homework/README.md b/macros/latex/contrib/homework/README.md
new file mode 100644
index 0000000000..0eecd3843f
--- /dev/null
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@@ -0,0 +1,100 @@
+<!-- Copyright (C) 2023 by Jinwen XU -->
+
+# `homework`, a LaTeX class for writing your homework
+
+## Introduction
+
+The current document class is for writing homework. It has the following features.
+- Simple and clear interface.
+- Built-in support for many theorem-like environments, already configured and ready to use (in the mean time also very customizable, via `\SetTheorem`).
+- Multilingual support: currently supporting Chinese (both simplified and traditional), English, French, German, Italian, Japanese, Portuguese (European and Brazilian), Russian and Spanish.
+- Page numbers are of the form `Page [current] of [total]`, which can help you ensure that there are no missing pages when you print your homework for submission.
+- Support writing problem statements and solutions (or proofs) in different colors.
+- Every statement and solution has its own QED symbol, in hollow or solid shape, respectively.
+- You may mark unfinished parts with `\DNF` or `\DNF<⟨remark⟩>` (meaning "did not finish") for reminding — this will give you a report on the unfinished parts at the end of your document.
+
+
+## Usage
+
+A typical homework document looks like this:
+
+```latex
+\documentclass[11pt,
+ logo = {image-file-of-your-university-logo},
+ % logo height = 2\baselineskip,
+ title in boldface,
+ title in sffamily,
+ theorem in new line,
+]{homework}
+
+\UseLanguage{...} % If you wish to write your homework in languages other than English
+
+
+\title{The Subject, Week 1}
+\author{Author NAME}
+\date{\TheDate{2023-12-25}, Location} % or: \date{\today[only-year-month], Location}
+
+
+\begin{document}
+
+
+% If you wish to write the answer directly...
+
+\begin{problem}
+ Here lies the solution / proof.
+\end{problem}
+
+
+% If you wish to state the problem and then write your answer...
+
+\begin{problem}
+ You may also state the problem here...
+\end{problem}
+
+\begin{solution}
+ ... and write the solution here...
+\end{solution}
+
+
+% If you prefer "Proof" instead of "Solution"...
+
+\begin{solution}[Proof]
+ ... or a proof like this one...
+ % You may write lemmas or propositions inside your solution.
+ \begin{lemma}\label{lem}
+ Some auxiliary result.
+ \end{lemma}
+ \begin{proof}
+ The proof of \cref{lem}.
+ \end{proof}
+ ... and the rest steps...
+\end{solution}
+
+
+\end{document}
+```
+
+> You may refer to the demo documents for more examples.
+
+A few remarks:
+1) The logo image can be included via the class option `logo = {⟨image file name⟩}`, and if you are not satisfied with its default size, then you may manually specify the size via the option `logo height = {⟨height⟩}`. If you do not want to show any logo in the title bar, you may simply remove the option `logo = {⟨image file name⟩}`.
+1) The options `title in boldface`, `title in sffamily` or even `title in scshape` are for configuring the text effect of the title line, the sectional titles and theorem names.
+1) The option `theorem in new line` is for showing the problem / theorem name, numbering and description in a separate line, for the sake of clarity.
+1) `\title`, `author` and `\date` should be placed before `\begin{document}`.
+1) Since the problem, solution and other theorem-type environments have a QED symbol at the end, if your text ends with displayed formula or lists, then you may need to place a `\qedhere` so that the QED symbol is placed in the right place.
+
+
+## TeXnical details
+
+### Engines and base classes
+- With pdfLaTeX, the base class is `minimart`.
+- With XeLaTeX or LuaLaTeX, the base class is `einfart`.
+
+### Regarding `\maketitle`
+
+The `\maketitle` has been automatically added just after `\begin{document}`, thus you don't need to write it by yourself. Note, however, that this also means that you cannot place `\title`, `author` and `\date` after `\begin{document}`.
+
+
+# License
+
+This work is released under the LaTeX Project Public License, v1.3c or later.
diff --git a/macros/latex/contrib/homework/homework-demo-cn.pdf b/macros/latex/contrib/homework/homework-demo-cn.pdf
new file mode 100644
index 0000000000..fee8009ae6
--- /dev/null
+++ b/macros/latex/contrib/homework/homework-demo-cn.pdf
Binary files differ
diff --git a/macros/latex/contrib/homework/homework-demo-cn.tex b/macros/latex/contrib/homework/homework-demo-cn.tex
new file mode 100644
index 0000000000..b62c665cee
--- /dev/null
+++ b/macros/latex/contrib/homework/homework-demo-cn.tex
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+\documentclass[11pt,
+ logo = {example-image},
+ % logo height = 2\baselineskip,
+ title in boldface,
+ % title in sffamily,
+ theorem in new line,
+]{homework}
+
+\UseLanguage{Chinese}
+
+
+\title{学科名称,第一周}
+\author{作者}
+% \date{\today[only-year-month],地点}
+\date{\TheDate{2023-12-25},地点}
+
+
+\begin{document}
+
+
+\bigskip\textcolor{gray!55}{(如果你打算直接写出解答…)}
+
+\begin{problem}
+ 这里是解答/证明。
+\end{problem}
+
+
+\bigskip\textcolor{gray!55}{((如果你打算先陈述问题后再写出解答…))}
+
+\begin{problem}
+ 你可以把问题陈述在这里…
+\end{problem}
+
+\begin{solution}
+ …然后把解答写在这里…
+\end{solution}
+
+\bigskip\textcolor{gray!55}{(如果比起\textquote{解},你更希望写\textquote{证明}…)}
+
+\begin{solution}[证明]
+ …或者写一个这样的证明…
+ \begin{lemma}\label{lem}
+ 一些辅助结果。
+ \end{lemma}
+ \begin{proof}
+ \Cref{lem}的证明。
+ \end{proof}
+ …剩余的步骤……
+\end{solution}
+
+
+\bigskip\textcolor{gray!55}{(如果你更喜欢传统的证明样式…)}
+
+\begin{proof}
+ \verb|proof| 环境依然可用。
+\end{proof}
+
+
+\end{document}
diff --git a/macros/latex/contrib/homework/homework-demo-en.pdf b/macros/latex/contrib/homework/homework-demo-en.pdf
new file mode 100644
index 0000000000..b698ad3a57
--- /dev/null
+++ b/macros/latex/contrib/homework/homework-demo-en.pdf
Binary files differ
diff --git a/macros/latex/contrib/homework/homework-demo-en.tex b/macros/latex/contrib/homework/homework-demo-en.tex
new file mode 100644
index 0000000000..fc99795da7
--- /dev/null
+++ b/macros/latex/contrib/homework/homework-demo-en.tex
@@ -0,0 +1,57 @@
+\documentclass[11pt,
+ logo = {example-image},
+ % logo height = 2\baselineskip,
+ title in boldface,
+ % title in sffamily,
+ theorem in new line,
+]{homework}
+
+
+\title{The Subject, Week 1}
+\author{Author NAME}
+% \date{\today[only-year-month], Location}
+\date{\TheDate{2023-12-25}, Location}
+
+
+\begin{document}
+
+
+\bigskip\textcolor{gray!55}{(If you wish to write the answer directly...)}
+
+\begin{problem}
+ Here lies the solution / proof.
+\end{problem}
+
+
+\bigskip\textcolor{gray!55}{(If you wish to state the problem and then write your answer...)}
+
+\begin{problem}
+ You may also state the problem here...
+\end{problem}
+
+\begin{solution}
+ ... and write the solution here...
+\end{solution}
+
+\bigskip\textcolor{gray!55}{(If you prefer \textquote{Proof} instead of \textquote{Solution}...)}
+
+\begin{solution}[Proof]
+ ... or a proof like this one...
+ \begin{lemma}\label{lem}
+ Some auxiliary result.
+ \end{lemma}
+ \begin{proof}
+ The proof of \cref{lem}.
+ \end{proof}
+ ... and the rest steps...
+\end{solution}
+
+
+\bigskip\textcolor{gray!55}{(If you prefer the classical proof style...)}
+
+\begin{proof}
+ The usual \verb|proof| environment also works.
+\end{proof}
+
+
+\end{document}
diff --git a/macros/latex/contrib/homework/homework-demo-fr.pdf b/macros/latex/contrib/homework/homework-demo-fr.pdf
new file mode 100644
index 0000000000..af035e9f3d
--- /dev/null
+++ b/macros/latex/contrib/homework/homework-demo-fr.pdf
Binary files differ
diff --git a/macros/latex/contrib/homework/homework-demo-fr.tex b/macros/latex/contrib/homework/homework-demo-fr.tex
new file mode 100644
index 0000000000..d978dcf875
--- /dev/null
+++ b/macros/latex/contrib/homework/homework-demo-fr.tex
@@ -0,0 +1,59 @@
+\documentclass[11pt,
+ logo = {example-image},
+ % logo height = 2\baselineskip,
+ title in boldface,
+ % title in sffamily,
+ theorem in new line,
+]{homework}
+
+\UseLanguage{French}
+
+
+\title{Le sujet, semaine 1}
+\author{Prénom NOM}
+% \date{\today[only-year-month], Location}
+\date{\TheDate{2023-12-25}, Location}
+
+
+\begin{document}
+
+
+\bigskip\textcolor{gray!55}{(Si vous souhaitez écrire la réponse directement...)}
+
+\begin{problem}
+ Voici la solution / la preuve.
+\end{problem}
+
+
+\bigskip\textcolor{gray!55}{(Si vous souhaitez énoncer le problème puis écrire votre réponse...)}
+
+\begin{problem}
+ Vous pouvez également énoncer le problème ici...
+\end{problem}
+
+\begin{solution}
+ ... puis écrire la solution ici...
+\end{solution}
+
+\bigskip\textcolor{gray!55}{(Si vous préférez \textquote{Preuve} au lieu de \textquote{Solution}...)}
+
+\begin{solution}[Preuve]
+ ... ou une preuve comme ça...
+ \begin{lemma}\label{lem}
+ Un résultat auxiliaire.
+ \end{lemma}
+ \begin{proof}
+ La preuve \cref[de]{lem}.
+ \end{proof}
+ ... et les étapes restantes...
+\end{solution}
+
+
+\bigskip\textcolor{gray!55}{(Si vous préférez le style classique...)}
+
+\begin{proof}
+ L'environnement habituel \verb|proof| fonctionne également.
+\end{proof}
+
+
+\end{document}
diff --git a/macros/latex/contrib/homework/homework.cls b/macros/latex/contrib/homework/homework.cls
new file mode 100644
index 0000000000..bf965588a5
--- /dev/null
+++ b/macros/latex/contrib/homework/homework.cls
@@ -0,0 +1,147 @@
+%%
+%% Copyright (C) 2023 by Jinwen XU
+%% -------------------------------
+%%
+%% This file may be distributed and/or modified under the conditions of
+%% the LaTeX Project Public License, either version 1.3c of this license
+%% or (at your option) any later version. The latest version of this
+%% license is in:
+%%
+%% http://www.latex-project.org/lppl.txt
+%%
+\NeedsTeXFormat{LaTeX2e}[2022-06-01]
+\ProvidesExplClass
+ {homework}
+ {2023/09/24} {}
+ {Document class for writing homework}
+
+\keys_define:nn { homework }
+ {
+ , logo .tl_set:N = \l__homework_logo_name_tl
+ , logo .initial:n = { }
+ , logo-height .dim_set:N = \l__homework_logo_height_dim
+ , logo~height .dim_set:N = \l__homework_logo_height_dim
+ , logo height .dim_set:N = \l__homework_logo_height_dim
+
+ , unknown .code:n = {
+ \PassOptionsToClass { \CurrentOption } { minimart }
+ \PassOptionsToClass { \CurrentOption } { einfart }
+ \PassOptionsToPackage { \CurrentOption } { ProjLib }
+ }
+ }
+\ProcessKeyOptions [ homework ]
+
+%%================================
+%% Load the base class
+%%================================
+
+\sys_if_engine_pdftex:TF
+ {
+ \PassOptionsToClass { use style = classical } { minimart }
+ \LoadClass { minimart }
+ }
+ {
+ \PassOptionsToClass { use style = classical } { einfart }
+ \LoadClass { einfart }
+ }
+
+\RequirePackage { ProjLib }
+
+%%================================
+%% Insert the logo
+%%================================
+
+\cs_new_protected:Nn \homework_include_logo:nn
+ % #1 = height
+ % #2 = name
+ {
+ \includegraphics [ height = #1 ] { #2 }
+ }
+
+\AddToHook { begindocument/end }
+ {
+ \maketitle
+
+ \tl_if_empty:NF \l__homework_logo_name_tl
+ {
+ \dim_compare:nNnT { \l__homework_logo_height_dim } < { 1pt }
+ {
+ \dim_set:Nn \l__homework_logo_height_dim { .6\pagetotal }
+ }
+ \dim_set:Nn \l_tmpa_dim { \pagetotal + .33\baselineskip }
+ \vspace { - \l_tmpa_dim }
+ \vspace { .5\l_tmpa_dim - .5\l__homework_logo_height_dim }
+ \homework_include_logo:nn { \l__homework_logo_height_dim } { \l__homework_logo_name_tl }
+ \vspace { .5\l_tmpa_dim - .5\l__homework_logo_height_dim }
+ }
+ }
+
+%%================================
+%% Page # of ##
+%%================================
+
+\projlib_langauge_define_multilingual_text:Nn \l__homework_page_of_total_tl
+ {
+ , EN = { Page \nobreakspace \,\thepage\, \nobreakspace of \nobreakspace \,\pageref*{LastPage} }
+ , FR = { Page \nobreakspace \,\thepage\, \nobreakspace sur \nobreakspace \,\pageref*{LastPage} }
+ , DE = { Seite \nobreakspace \,\thepage\, \nobreakspace von \nobreakspace \,\pageref*{LastPage} }
+ , IT = { Pagina \nobreakspace \,\thepage\, \nobreakspace di \nobreakspace \,\pageref*{LastPage} }
+ , PT = { Página \nobreakspace \,\thepage\, \nobreakspace de \nobreakspace \,\pageref*{LastPage} }
+ , BR = { Página \nobreakspace \,\thepage\, \nobreakspace de \nobreakspace \,\pageref*{LastPage} }
+ , ES = { Página \nobreakspace \,\thepage\, \nobreakspace de \nobreakspace \,\pageref*{LastPage} }
+ , CN = { 第 \,\thepage\, 页,共 \,\pageref*{LastPage}\, 页 }
+ , TC = { 第 \,\thepage\, 頁,共 \,\pageref*{LastPage}\, 頁 }
+ , JP = { ページ \nobreakspace \,\thepage\, / \,\pageref*{LastPage} }
+ , RU = { Страница \nobreakspace \,\thepage\, \nobreakspace из \nobreakspace \,\pageref*{LastPage} }
+ }
+
+\RequirePackage { lastpage }
+\fancypagestyle { fancy }
+ {
+ \rfoot{\small\color{main-text!27!paper} \l__homework_page_of_total_tl }
+ }
+\pagestyle { fancy }
+
+%%================================
+%% Colored solution environment
+%%================================
+
+\projlib_langauge_define_multilingual_text:Nn \l__homework_solution_tl
+ {
+ , EN = { Solution }
+ , FR = { Solution }
+ , DE = { Lösung }
+ , IT = { Soluzione }
+ , PT = { Solução }
+ , BR = { Solução }
+ , ES = { Solución }
+ , CN = { 解 }
+ , TC = { 解 }
+ , JP = { 解答 }
+ , RU = { Решение }
+ }
+
+\newcommand\soluline{\bgroup\markoverwith{\rule[-.45ex]{2pt}{.75pt}}\ULon}
+\NewDocumentEnvironment { solution } { O{ \l__homework_solution_tl } }
+ {
+ \setlength\abovedisplayskip{.3\baselineskip}
+ \setlength\belowdisplayskip{.3\baselineskip}
+ \setlength\abovedisplayshortskip{.3\baselineskip}
+ \setlength\belowdisplayshortskip{.3\baselineskip}
+ \par\noindent
+ \color{cyan!50!blue!90!main-text}
+ \soluline{#1}\nobreakspace\nobreakspace
+ \let\qedsymbol\customqedsymbol
+ }{\pushQED{\qed}\popQED\par}
+
+%%================================
+%% Configuration of the theorems
+%%================================
+
+\newcounter{homework}
+\SetTheorem{problem,question}{shared counter=homework}
+\SetTheorem{lemma,theorem,proposition,fact,remark}{number within=homework}
+
+\endinput
+%%
+%% End of file `homework.cls'.