 These interpretations have created different traditions within Vaishnavism, from dualistic ("Dvaita") Vedanta of Madhvacharya, to nondualistic ("Advaita") Vedanta of Madhusudana Sarasvati.Along with the reverence and exegetical analysis of the ancient Principal Upanishads, Vaishnava-inspired scholars authored 14 Vishnu avatar-focussed Upanishads that are called the Vaishnava Upanishads.These are considered part of 95 minor Upanishads in the Muktikā Upanishadic corpus of Hindu literature.