According to Kuppuswami Sastri, it is not likely that Maṇḍana Miśra, the author of "Brahmasiddhi", is identical with Sureśvara, but the tradition is correct in describing Maṇḍana Miśra and Śankara as contemporaries. His critical edition of the "Brahmasiddhi" also points out that the name Maṇḍana Miśra is both a title and a first name, which is a possible cause for a confusion of personalities. Maṇḍana Miśra's brand of Advaita differs in certain critical details from that of Śhankara, whereas Sureśvara's thought is very faithful to that of Śankara.