Error: Proof:theideaofproofissimple.observethat(11.3)istheimageofthebasepointx0underthedeformationsuggestingtheuseoftheorem(7.8).ifwe Xanintermediatetimes2[0;1]thenthecurvesgivenbys(t)=t7!(st)startsaty0an - PowerPoint Presentations and PDF Documents