update.

scripts/build_chapter_pdfs.ps1

@@ -18,6 +18,8 @@ $main = Get-Content -Raw -Encoding UTF8 "rl-introduction.tex"
 $preamble = [regex]::Match($main, "(?s)^.*?\\begin\{document\}").Value
 $preamble = $preamble -replace "(?m)^\\def\\bibdata#1\{\}\r?\n", ""
 $preamble = $preamble -replace "(?m)^\\def\\bibstyle#1\{\}\r?\n", ""
+$preamble = $preamble -replace "(?s)\\title\{.*?\}\r?\n", ""
+$preamble = $preamble -replace "(?s)\\author\{\\normalfont\s*\\begin\{tabular\*\}.*?\\end\{tabular\*\}\s*\}\r?\n", ""
 
 $introMatch = [regex]::Match(
     $main,
@@ -30,55 +32,46 @@ if (-not $introMatch.Success) {
 $chapters = @(
     @{
         Job = "chapter-01-introduction"
-        Title = "Chapter 1: Introduction"
         Counter = $null
         Body = $introMatch.Value
     },
     @{
         Job = "chapter-02-preliminary"
-        Title = "Chapter 2: Preliminary"
         Counter = 1
         Body = "\input{section2/section2}"
     },
     @{
         Job = "chapter-03-understanding-rl-in-llm-training"
-        Title = "Chapter 3: Understanding RL in LLM Training"
         Counter = 2
         Body = "\input{section3/section3}"
     },
     @{
         Job = "chapter-04-improved-rl-for-llms"
-        Title = "Chapter 4: Improved RL for LLMs"
         Counter = 3
         Body = "\input{section4/section4}"
     },
     @{
         Job = "chapter-05-rl-for-llm-reasoning"
-        Title = "Chapter 5: RL for LLM Reasoning"
         Counter = 4
         Body = "\input{section5/section5}"
     },
     @{
         Job = "chapter-06-agentic-rl"
-        Title = "Chapter 6: Agentic RL"
         Counter = 5
         Body = "\input{section6/section6}"
     },
     @{
         Job = "chapter-07-multimodal-rl"
-        Title = "Chapter 7: Multimodal RL"
         Counter = 6
         Body = "\input{section7/section7}"
     },
     @{
         Job = "chapter-08-conclusions-and-future-directions"
-        Title = "Chapter 8: Conclusions and Future Directions"
         Counter = 7
         Body = "\input{section8/section8}"
     },
     @{
         Job = "appendix-datasets-and-systems"
-        Title = "Appendix: Datasets and Systems"
         Counter = $null
         Body = "\input{appendix/appendix}"
     }
@@ -90,13 +83,10 @@ foreach ($chapter in $chapters) {
         $counterLine = "\setcounter{section}{$($chapter.Counter)}"
     }
 
-    $tex = @"
+$tex = @"
 $preamble
 
-\title{RL without Tears:\\ $($chapter.Title)}
-
 \begin{CJK*}{UTF8}{gbsn}
-\maketitle
 
 $counterLine
 $($chapter.Body)