On the existence of the self map v_2^9 on the Smith-Toda complex V(1) at the prime 3 Mark Behrens Department of Mathematics University of Chicago Chicago, IL 60637, U.S.A. mbehrens@math.uchicago.edu Satya Pemmaraju Fixed Income Derivatives UBS Warburg Stamford, CT 06901, U.S.A. Satya.Pemmaraju@ubsw.com AMS Classification: 55Q51; 55Q45, 55T15 math.AT/0303223 submitted to proceedings of the Northwestern University conference on algebraic topology, March 2002 Included EPS files: assE2.eps bss.eps eo_2V1.eps eo_2V1ASS.eps extP.eps splitting.eps Note: there is one chart created using the landscape package in LaTeX. On some dvi viewers, this chart does not display properly, but is viewable when converted to Postscript. Abstract Let V(1) be the Smith-Toda complex at the prime 3. We prove that there exists a map v_2^9: \Sigma^{144}V(1) \to V(1) that is a K(2) equivalence. This map is used to construct various v_2-periodic infinite families in the 3-primary stable homotopy groups of spheres.