Introduction

<BODY bgcolor="#ffeee0" text="#000000" link="#9944EE" vlink="#FF0000" alink="#00ff00">  <A NAME="tex2html174" HREF="node1_mn.html" TARGET="_top"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.gif"></A> <A NAME="tex2html168" HREF="node2_mn.html" TARGET="_top"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.gif"></A> <A NAME="tex2html176" HREF="node3_tf.html" TARGET="_top"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html179" HREF="node4_mn.html" TARGET="_top">Errors and Uncertainties</A> <B> Up:</B> <A NAME="tex2html175" HREF="node1_mn.html" TARGET="_top">Contents</A> <B> Previous:</B> <A NAME="tex2html169" HREF="node2_mn.html" TARGET="_top">Forward</A>   <B> <A NAME="tex2html177" HREF="node3_tf.html" TARGET="_top">Contents</A></B> <BR> <BR> <P> Sorry, this requires a browser that supports frames! <BR> Try <A HREF="node3_ct.html">node3_ct.html</A> instead.</P> <HR> <ADDRESS> Michael Winokur 2007-09-07 </ADDRESS>