2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45715A high energy $e^+e^-$ linear collider (NLC) is an excellent tool for studying the properties of the top quark. In this talk I review some of the theory of top quark production and decay in $e^+e^-$ collisions both at threshold and in the continuum. I also report on the results of phenomenological analyses of $t\bar t$ production at the NLC.Talk presented at Workshop on Physics of the Top Quark, Ames, Iowa, May 25-26, 1995. 10 pages, LaTex, 7 embedded postscript figures, tarred and uuencodedHigh Energy Physics - Phenomenologytext