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<H1><CENTER>Class 20</CENTER></H1>
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<H2>Table of Contents</H2>
<H4>Select a slide or start at the <A HREF="fslide1.html">beginning</A>.</H4>
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<LI><A HREF="fslide1.html">Methods of Proof</A>
<BR><LI><A HREF="fslide2.html">Kings on a Chessboard</A>
<BR><LI><A HREF="fslide3.html">Indirect Proof</A>
<BR><LI><A HREF="fslide4.html">Sum of Two Squares</A>
<BR><LI><A HREF="fslide5.html">Proof by Contradiction</A>
<BR><LI><A HREF="fslide6.html">Tiling a Pruned Checkerboard with Dominos</A>
<BR><LI><A HREF="fslide7.html">Proof by Cases</A>
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<CENTER><A HREF="mailto:hochberg@cs.ecu.edu">Comments or Questions?</A></CENTER>
<CENTER><I>Last update: 11/12/2002</I></CENTER>
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