A root text by Khenpo Tsültrim Gyamtso Rinpoche. It presents the divisions and definitions logic, and what constitutes valid and invalid reasoning as presented in the tradition of Dignāga and Dharmakīrti.
Commentary by Acharya Sherab Gyaltsen.
Root Text Translation by Ari Goldfield.
Oral Translation by Elizabeth M. Callahan.
This transcript was produced from a series of talks given by Acharya Sherab Gyaltsen at Nitartha Institute, Gampo Abbey, Nova Scotia, Canada, in June and July 1997.