Who were the Advaitins before Adi Shankara? gauDapAda's kArika is a commentary on mAnDUkya. What about other Upanishads? Kena is said to have two commentaries by Adi Shankara, one of which is said to have referred to an earlier commentary. What was it?
What about the authors of ashTAvakra-gIta, avadhUta-gIta and yoga-vAsishhTa?
Why does Swami Madhavananda says that "Kumarila Bhatta did his best to do an GYAna-interpretation of the brahmaNAs?
In general, what was the Vedantic tradition (as in Upanishadic) before gauDapAda, govindapAda and shankara?