Add files via upload

tutorial/tutorialTDA.xml

@@ -244,17 +244,25 @@ can be computed and the persistent homology can be derived from these homology h
 </Example>
 
         <P/>
-<Alt Only="HTML">&lt;img src="images/1v2x.gif" align="center" height="500" alt="a protein backbone"/></Alt>
+	<Alt Only="HTML">&lt;img src="images/1v2x.gif" align="center" height="500" alt="a protein backbone"/></Alt>
 
+<!--
+		<Alt Only="HTML">&lt;img src="images/1v2x.png" align="center" height="500" alt="a protein backbone"/></Alt>
+-->
 	<P/>The next command reads in the pdb file for the  T.thermophilus 1V2X protein and represents it as a <M>3</M>-dimensional pure cubical complex <M>K</M>. A resolution of <M>r=5</M> is chosen and this results in a representation as a subcomplex <M>K</M> of an ambient rectangular box of volume equal to <M>184\times 186\times 294</M> unit cubes. The complex <M>K</M> should have the homotopy type of a circle and the protein backbone is a 1-dimenional curve that should lie  in <M>K</M>. The final command displays <M>K</M>.
 
 		 <Example>
 <#Include SYSTEM "tutex/4.11.txt">
 </Example>
 
-	<P/>
+<P/>
 <Alt Only="HTML">&lt;img src="images/1v2xcubical.gif" align="center" height="500" alt="pure cubical complex representing a protein backbone"/></Alt>
 
+<!--
+	<Alt Only="HTML">&lt;img src="images/1v2xcubical.png" align="center" height="500" alt="pure cubical complex representing a protein backbone"/></Alt>
+-->
+
+
 	<P/>Next we create a filtered pure cubical complex by repeatedly
 		thickening <M>K</M>. We perform <M>15</M> thickenings, each thickening being a term in the filtration. The <M>\beta_1</M> barcode for the filtration is displayed. This barcode is a descriptor for the geometry of the protein. For current purposes it suffices to note that the first few terms of the filtration have first
 		homology equal to that of a circle. This indicates that the Euclidean coordinates in the pdb file robustly determine some knot.