--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sandbox.tex	Sun Dec 13 01:32:28 2009 +0000
@@ -0,0 +1,68 @@
+\documentclass[11pt,leqno]{amsart}
+
+%\usepackage{amsthm}
+
+\newcommand{\pathtotrunk}{./}
+\input{text/article_preamble}
+\input{text/top_matter}
+\input{text/kw_macros}
+
+
+%\title{Blob Homology}
+\title{Sandbox}
+
+\begin{document}
+\begin{equation*}
+\begin{tikzpicture}
+\def\rad{1}
+\def\srad{0.75}
+\foreach \i in {0, 1, 2} {
+	\node(\i) at ($\i*(4.5,0)$) {};
+}
+\draw (0) circle (\rad);
+
+\draw ($(1)+(1,0)$) circle (\srad);
+\draw[fill=white] (1) circle (\rad);
+
+\begin{scope}
+\draw[clip] (2) circle (\rad);
+\draw ($(2)+(1,0)$) circle (\srad);
+\end{scope}
+
+\end{tikzpicture}
+\end{equation*}
+
+\begin{equation*}
+\begin{tikzpicture}
+\node(M) at (0,0) {$M$};
+\foreach \angle/\label in {0/K', 45/K'L, 90/L, 135/KL, 180/K, 225/KL', 270/L', 315/K'L'} {
+	\node(\label) at (\angle:4) {$\label$};
+}
+\foreach \label in {K', L, K, L'} {
+	\node(\label M) at ($(M)!0.6!(\label)$) {$\label M$};
+	\draw[->] (\label M)--(M);
+	\draw[->] (\label M)--(\label);
+}
+\foreach \k in {K, K'} {
+	\foreach \l in {L, L'} {
+		\node(\k \l M) at (intersection cs: first line={(\k M)--(\l)}, second line={(\l M)--(\k)}) {$\k \l M$};
+		\draw[->] (\k \l M)--(M);
+		\draw[->] (\k \l M)--(\k \l );
+		\draw[->] (\k \l M)--(\k M);
+		\draw[->] (\k \l M)--(\l);
+		\draw[->] (\k \l M)--(\l M);
+		\draw[->] (\k \l M)--(\k);
+	}
+}
+\draw[->] (K'L') to[bend right=10] (K');
+\draw[->] (K'L') to[bend left=10] (L');
+\draw[->] (KL') to[bend left=10] (K);
+\draw[->] (KL') to[bend right=10] (L');
+\draw[->] (K'L) to[bend left=10] (K');
+\draw[->] (K'L) to[bend right=10] (L);
+\draw[->] (KL) to[bend right=10] (K);
+\draw[->] (KL) to[bend left=10] (L);
+\end{tikzpicture}
+\end{equation*}
+
+\end{document}