From 7321e6c665f3b9797bb7a76618e6419a33357e6c Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Sun, 16 Jun 2019 20:02:48 -0400
Subject: [PATCH] mjo-complex.tex: new file with a \compconj (complex
 conjugate) command.

---
 GNUmakefile     | 6 +++---
 examples.tex    | 5 +++++
 mjo-complex.tex | 4 ++++
 mjotex.sty      | 1 +
 4 files changed, 13 insertions(+), 3 deletions(-)
 create mode 100644 mjo-complex.tex

diff --git a/GNUmakefile b/GNUmakefile
index f3352b6..8f9fc6b 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -17,9 +17,9 @@ PN = examples
 
 # A space-separated list of the mjotex files that you use. The path to
 # mjotex must be contain in your $TEXINPUTS environment variable.
-MJOTEX  = mjo-algorithm.tex mjo-arrow.tex mjo-common.tex mjo-cone.tex
-MJOTEX += mjo-convex.tex mjo-font.tex mjo-linear_algebra.tex mjo-listing.tex
-MJOTEX += mjo-misc.tex mjo-proof_by_cases.tex mjo-theorem.tex
+MJOTEX  = mjo-algorithm.tex mjo-arrow.tex mjo-common.tex mjo-complex.tex
+MJOTEX += mjo-cone.tex mjo-convex.tex mjo-font.tex mjo-linear_algebra.tex
+MJOTEX += mjo-listing.tex mjo-misc.tex mjo-proof_by_cases.tex mjo-theorem.tex
 MJOTEX += mjo-theorem-star.tex mjo-topology.tex mjo.bst
 
 # Use kpsewhich (from the kpathsea suite) to find the absolute paths
diff --git a/examples.tex b/examples.tex
index 897396c..a202da7 100644
--- a/examples.tex
+++ b/examples.tex
@@ -80,6 +80,11 @@
     \end{align*}
   \end{section}
 
+  \begin{section}{Complex}
+    We sometimes want to conjugate complex numbers like
+    $\compconj{a+bi} = a - bi$.
+  \end{section}
+
   \begin{section}{Cone}
     The dual cone of $K$ is $\dual{K}$. Some familiar symmetric cones
     are $\Rnplus$, $\Lnplus$, $\Snplus$, and $\Hnplus$.  If cones
diff --git a/mjo-complex.tex b/mjo-complex.tex
new file mode 100644
index 0000000..23d440f
--- /dev/null
+++ b/mjo-complex.tex
@@ -0,0 +1,4 @@
+% Operations used when dealing with complex numbers.
+
+% The complex conjugate of its argument.
+\providecommand*{\compconj}[1]{ \overline{#1} }
diff --git a/mjotex.sty b/mjotex.sty
index 039738b..0c5cd76 100644
--- a/mjotex.sty
+++ b/mjotex.sty
@@ -1,6 +1,7 @@
 \input{mjo-algorithm}
 \input{mjo-arrow}
 \input{mjo-common}
+\input{mjo-complex}
 \input{mjo-cone}
 \input{mjo-convex}
 \input{mjo-font}
-- 
2.43.2