[tex] place 2 images side by side

latex/README.org

@@ -0,0 +1,5 @@
+ - figs-side-by-side.tex: Place two figures side by side
+ - long-brackets.tex: Label a table with long braces spanning multiple rows
+ - nfa-rules.tex: Typing rules for an NFA
+ - misc.tex: Miscellaneous
+   + Antimirov derivatives

latex/figs-side-by-side.tex

@@ -0,0 +1,41 @@
+\documentclass{article}
+\usepackage{mathpartir}
+\begin{document}
+
+% NOTE: The figure captions probably doesn't line up if height of figures are
+% different. subfig package might be of help in such a scenario.
+
+% https://tex.stackexchange.com/questions/282869/putting-two-figures-side-by-side
+\begin{figure}
+  \begin{minipage}[c]{0.5\linewidth}
+    \begin{mathpar}
+    \begin{array}{rcll}
+      r & := & \O          & \ \ (Empty \ language) \\
+        & |  & \varepsilon & \ \ (Empty \ string)   \\
+        & |  & b           & \ \ (Atom)             \\
+        & |  & r ; r       & \ \ (Concatenation)    \\
+        & |  & r + r       & \ \ (Choice)           \\
+        & |  & r*          & \ \ (Kleene \ star)    \\
+    \end{array}
+    \end{mathpar}
+    \caption{Regular expression syntax}
+    \label{fig:re-syntax}
+  \end{minipage}
+  \hfill
+  \begin{minipage}[c]{0.4\linewidth}
+    \begin{mathpar}
+    \begin{array}{rcl}
+      L(\O)           & = & \{ \}                             \\
+      L(\varepsilon)  & = & \{\varepsilon\}                   \\
+      L(c)            & = & \{c\}                             \\
+      L(r_1; r_2)     & = & L(r_1); L(r_2)                    \\
+      L(r_1 + r_2)    & = & L(r_1) \ \cup \ L(r_2)            \\
+      L(r*)           & = & \{\varepsilon\} \ \cup \ L(r; r*) \\
+    \end{array}
+    \end{mathpar}
+    \caption{Regular languages}
+    \label{fig:re-lang}
+  \end{minipage}%
+\end{figure}
+
+\end{document}