 The well known and widely studied medieval era reviews and commentaries on Samkhya-karika include the "Gaudapada Samkhya Karika Bhasya" (unclear date, certainly before 8th-century), the Paramartha's Chinese translation (6th-century), the "Matharavrtti", the "Samkhya tattva kaumudi" (9th-century), the "Jayamangala" (likely before 9th-century), and the more recently discovered "Yuktidipika".Vacaspati Mishra's is well studied commentary, in addition to his well-known commentary to Yoga Sutras of Patanjali.The Karika is silent about God, states Johannes Bronkhorst, neither denying nor affirming the existence of God.