What is "shuddhadvaita"

Shuddadvaita ( Sanskrit: "pure non-dualism") is the "purely non-dual" philosophy propounded by Vallabhacharya (1479-1531 CE), the founding philosopher and guru of the ("tradition of Vallabh") or ("The path of grace"), a Hindu Vaishnava tradition focused on the worship of Krishna. Vallabhacharya's pure form ( nondualist) philosophy is different from Advaita. The Shrinathji temple at Nathdwara, and compositions of eight poets , including Surdas, are central to the worship by the followers of the sect.