Mackey, MichaelMichaelMackey2015-01-132015-01-132009 World2009Asian-European Journal of Mathematicshttp://hdl.handle.net/10197/6283In this note, we look at homotopes of Jordan triple structures and show that, following a renorming, an isotope of a JB*-triple is also a JB*-triple. We also provide a proof of the Russo—Dye theorem for JBW*-triples.enElectronic version of an article published as Asian-European Journal of Mathematics 2(3) 2009: 465-475,10.1142/S179355710900039X, © World Scientific Publishing Company, http://www.worldscientific.com/worldscinet/aejmJB*-triplesHomotopesRusso-Dye theoremJournal Article2346547510.1142/S179355710900039X2014-12-10https://creativecommons.org/licenses/by-nc-nd/3.0/ie/