X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=mjo-proof_by_cases.tex;h=f2d9b90987c8b894d74f8f38c41b16a620931029;hb=c674a11f42cdf7ca05680e435abbd270ab51ae13;hp=b85daefa54a80b9e7365feb42cbcc82a30c0b460;hpb=38147a40c34416d5dbd87f44d8786e3dd73a132f;p=mjotex.git

diff --git a/mjo-proof_by_cases.tex b/mjo-proof_by_cases.tex
index b85daef..f2d9b90 100644
--- a/mjo-proof_by_cases.tex
+++ b/mjo-proof_by_cases.tex
@@ -13,15 +13,27 @@
 \usepackage{enumitem}
 
 % Using the enumitem package, we define a new type of list, called
-% ``pcases'' (proof by cases).
+% ``pcases'' (proof by cases). Each case has a label with an arabic
+% numeral (the case number), but also a \thiscase identifier. The
+% macro \thiscase is defined below by the \case command, and gives the
+% name or conditions or whatever that distinguish one case from
+% another.
 \newlist{pcases}{enumerate}{1}
 \setlist[pcases]{
-  label=\textbf{Case~\arabic*}~(\protect\thiscase)\textbf{:},
+  label=\textbf{Case~\arabic*}:~\protect\thiscase\textbf{.},
   ref=\arabic*,
   align=left,
-  leftmargin=\parindent}
+  leftmargin=0pt,
+  listparindent=\parindent,
+  parsep=\parskip,
+  itemsep=\baselineskip}
 
+% The optional argument here gets stuffed into the \thiscase macro, to
+% be called by pcases when it creates this list item. The \hfill is a
+% hack intended to force the proof to start on a new line, rather than
+% right after the colon. A \newline where the \hfill is does not work,
+% so we consume the rest of the line instead.
 \newcommand{\case}[1][]{
   \def\thiscase{#1}%
-  \item
+  \item \hfill\par\vspace{\baselineskip}
 }