Tiny fixes.

04-lecture-notes.tex

@@ -25,15 +25,6 @@ paperheight=9in,
 \definecolor{darkred}{rgb}{0.5,0.0,0.0}
 \definecolor{lightgray}{gray}{0.75}
 
-% we want some hypertext stuff please
-\usepackage{hyperref}
-\hypersetup{
-colorlinks=true,
-urlcolor=darkblue,
-citecolor=darkred,
-linkcolor=darkgreen,
-}
-
 % switch to a different font
 \usepackage{fouriernc}
 
@@ -68,9 +59,22 @@ linkcolor=darkgreen,
 \usepackage{lipsum}
 \usepackage{blindtext}
 
-% a silly abbreviated I needed to import something
+% smarter cross-references that include automatic page-references
+\usepackage{varioref}
+
+% a silly abbreviation I needed to import an example
 \newcommand{\f}{\bfseries}
 
+% we want some hypertext stuff please
+% IMPORTANT: !always load hyperref last!
+\usepackage{hyperref}
+\hypersetup{
+colorlinks=true,
+urlcolor=darkblue,
+citecolor=darkred,
+linkcolor=darkgreen,
+}
+
 % alright, now we start the actual book :-)
 \title{\textbf{The Typography of History}\\
 Lecture Notes for AS.987.123}
@@ -83,8 +87,7 @@ phf@cs.jhu.edu}
 
 \maketitle
 
-\chapter*{Preface}
-\addcontentsline{toc}{chapter}{Preface}
+\chapter{Preface}
 
 \lipsum[1]
 
@@ -108,6 +111,7 @@ please \cite{Conway2000,Meyer2000,Huetal2000,LaTeXe,lshort,Gill}.
 On the other hand, we'd prefer to do some
 serious Algebraic Topology\index{Algebraic Topology}\index{Topology!Algebraic}
 instead of Category Theory\index{Category Theory} to figure this out.
+See Figure~\vref{plot}.
 
 \section{A Journey of Doom}
 \lipsum[1-4]
@@ -175,8 +179,11 @@ Level &
 \centering
 \includegraphics[width=\textwidth]{plot}
 \caption{Something silly PyLab plotted for us}
+\label{plot}
 \end{figure}
-\lipsum[3-8]
+\lipsum[3]
+Also shown in Figure~\vref{plot} of course.
+\lipsum[4-8]
 
 \chapter[Democracy of the Masters]{Democracy of the\\Masters}
 \lipsum[1-10]
@@ -194,21 +201,22 @@ Level &
 
 \backmatter
 
-\newpage
+\cleardoublepage
 \phantomsection
 \addcontentsline{toc}{chapter}{Bibliography}
 \bibliography{04-lecture-notes}{}
+% plain is [2] and full author name, abbrv shortens author
+% alpha is [Kan02], common in CS books
+% apalike is [Brooks et al., 2010]
 \bibliographystyle{plain}
-%\bibliographystyle{abbrv}
-%\bibliographystyle{alpha}
-%\bibliographystyle{apalike}
 
-\chapter*{Colophone}
-\addcontentsline{toc}{chapter}{Colophone}
-\lipsum[2]
-
-\clearpage
+\cleardoublepage
+\phantomsection
 \addcontentsline{toc}{chapter}{Index}
 \printindex
 
+\cleardoublepage
+\chapter{Colophone}
+\lipsum[2]
+
 \end{document}

26-epigrams.tex

@@ -177,7 +177,7 @@ If there are epigrams, there must be meta-epigrams.
 \item Epigrams scorn detail and make a point: They are a superb high-level documentation.
 \item Epigrams are more like vitamins than protein.
 \item Epigrams have extremely low entropy.
-\item The last epigram? Neither eat nor drink them, snuff epigrams. 
+\item The last epigram? Neither eat nor drink them, snuff epigrams.
 \end{enumerate}
 \end{multicols}
 

40-lambda.tex

@@ -0,0 +1,77 @@
+\RequirePackage[l2tabu,orthodox]{nag}
+\RequirePackage{fixltx2e}
+
+\documentclass[a4paper,12pt]{article}
+
+\usepackage{fourier}
+\usepackage{empheq}
+
+\title{\textbf{Lambdas Everywhere}}
+\author{Peter H.\ Fr{\"o}hlich\\
+phf@acm.org}
+
+\begin{document}
+
+\maketitle
+
+\begin{abstract}
+Tries to show how you can \(\lambda\) it up.
+Sorry, this is nowhere near complete,
+but I don't have time for more right now.
+\end{abstract}
+
+\section*{Problem 1}
+
+You can state short fragments like \(S \equiv \lambda nab.a(nab)\) in the text
+itself.
+Or you can typeset them more prominently as follows:
+\[
+S \equiv \lambda nab.a(nab)
+\]
+If need be, you can even number your equations:
+\begin{equation}
+S \equiv \lambda nab.a(nab)
+\label{Slambda}
+\end{equation}
+Then you can later refer to equation (\ref{Slambda}) and impress your friends
+with your \LaTeX{} power.
+Got a \emph{really} important result? Frame it!
+\begin{empheq}[box=\fbox]{equation}
+S \equiv \lambda nab.a(nab)
+\end{empheq}
+That's about it for just plain \(\lambda\) expressions.
+
+\section*{Problem 2}
+
+One of \emph{many} ways to typeset a derivation.
+Note the use of ``\(\equiv\)'' for steps that just rename things versus the use
+of ``\(\to\)'' for reductions.
+%
+\begin{align*}
+S3
+\equiv {} & (\lambda nab.a(nab)) 3 \\
+\equiv {} & (\lambda nab.a(nab)) (\lambda sz.s(s(s(z)))) \\
+\to {}    & \lambda ab.a((\lambda sz.s(s(s(z))))ab) \\
+\to {}    & \lambda ab.a((\lambda z.a(a(a(z))))b) \\
+\to {}    & \lambda ab.a(a(a(a(b)))) \\
+\equiv {} & \lambda sz.s(s(s(s(z)))) \\
+\equiv {} & 4
+\end{align*}
+%
+If you want to be even clearer, underline the redexes for reductions and use a
+fancy font for abbreviations:
+%
+\begin{align*}
+\textsf{S3}
+\equiv {} & (\lambda nab.a(nab)) \textsf{3} \\
+\equiv {} & (\lambda \underline{n}ab.a(nab)) \underline{(\lambda sz.s(s(s(z))))} \\
+\to {}    & \lambda ab.a((\lambda \underline{s}z.s(s(s(z))))\underline{a}b) \\
+\to {}    & \lambda ab.a((\lambda \underline{z}.a(a(a(z))))\underline{b}) \\
+\to {}    & \lambda ab.a(a(a(a(b)))) \\
+\equiv {} & \lambda sz.s(s(s(s(z)))) \\
+\equiv {} & \textsf{4}
+\end{align*}
+%
+And we're done for now.
+
+\end{document}

50-tikz-rs-latch.tex

@@ -24,7 +24,7 @@
   % outputs
   \draw (nand1.output) -- ++(right:1) node [right] {\(Q\)};
   \draw (nand2.output) -- ++(right:1) node [right] {\(\overline{Q}\)};
-  % input nubs for cross coupling  
+  % input nubs for cross coupling
   \draw (nand1.input 2) -- ++(left:0.5) -- ++(down:0.5) coordinate (x1);
   \draw (nand2.input 1) -- ++(left:0.5) -- ++(up:0.5) coordinate (x2);
   % output nubs for cross coupling

Makefile

@@ -1,5 +1,23 @@
-all:
-	echo "Not implemented. :-/"
+TEX=pdflatex
+BIBTEX=bibtex
+INDEX=makeindex
 
+all: 04-lecture-notes.pdf
+
+# This does a little more work than strictly necessary, but for regular-sized
+# documents you probably won't notice on today's machines...
+04-lecture-notes.pdf: 04-lecture-notes.tex 04-lecture-notes.bib plot.pdf
+	$(TEX) $<
+	while ($(BIBTEX) $(basename $<) ; \
+	$(INDEX) $(basename $<) ; \
+	$(TEX) $< ; \
+	grep -q "Rerun to get cross-references" $(basename $<).log ) do true ; \
+	done
+
+plot.pdf: plot.py
+	python $^
+
+.PHONY: clean
 clean:
-	rm -rf *.aux *.log *.toc *.lof *.nav *.out *.snm *.lot *.pdf *.bbl *.blg *.dvi *.idx *.ilg *.ind
+	rm -rf *.aux *.log *.toc *.lof *.nav *.out *.snm *.lot *.pdf *.bbl \
+	*.blg *.dvi *.idx *.ilg *.ind

README.md

@@ -8,6 +8,50 @@ at times!
 Still, if you're willing to learn, you'll be rewarded
 with almost limitless typographic beauty.
 
+## Contents
+
+- **01-minimal-document.tex** is just about the
+  shortest thing that will compile
+
+- **02-basic-article.tex** shows something more
+  complete; minimal knowledge for a rough term
+  paper I would guess
+
+- **03-fancier-article.tex** uses some packages
+  to make things look nicer, shows off a basic
+  bibliography; what you'd really want for a
+  moderately decent term paper
+
+- **04-lecture-notes.tex** and **04-lecture-notes.bib**
+  shows off a more complex document (lecture notes for
+  a fictitious course) and messes with lots of things
+  including chapter headings; shows how an index and an
+  external bibliography can be used; also shows off
+  cross-references in the document
+
+- **05-color-test.tex** and **jhcolors.sty**
+  demonstrates how to hack a custom style file
+
+- **26-epigrams.tex** is just another example
+  for laying out a document, a famous one in
+  this case
+
+- **50-tikz-rs-latch.tex** has a *very* simple
+  TikZ example for drawing a basic circuit
+
+- **99-basic-presentation.tex** shows how to put
+  together a simple presentation using beamer
+
+## History
+
+I wrote most of this stuff for a talk I gave to the
+Johns Hopkins ACM chapter on 2015/02/12.
+I didn't get through all the material, never touched
+writing your own .sty files for example.
+Let's see if I reprise the talk more frequently now,
+the last time I recall giving a similar talk was in
+2007 or so. Yikes!
+
 ## License
 
 This work is licensed under a Creative Commons