2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147976In these three lectures, I review the physics of top quark. Each of the lectures is self-contained.77 pages, in LaTeX; minor difference from the previous version; figures are not included. Lecture given at the VI Mexican School of Particles and Fields, Villahermosa, Mexico, 3-7 October 1994. Its postscript file available by anonymous ftp at ftp://cteq14.pa.msu.edu/pub/yuan/mexico94.ps . (The Unix-compress'd and gzip'd versions are also provided.)High Energy Physics - Phenomenologytext