Works of Akalanka Deva (8th century) have a significant place in Indian literature on logic. Among his works discovered so far Laghiyaratraya, Pramana Sangraha, Nyaya-vinishchaya and Siddhi-vinishchaya are fully concerned with the subject of logic. The vivarana (commentary) written on his work Nyaya-vinishchaya by Acharya Vadiraja Suri (12th century) is very extensive, covering all aspects completely. The three sections expounded upon by Akalanka Deva in Nyaya-vinishchaya – pratyaksha (perception by the senses), anumana (inference) and pravachana (discourse) in weighty and forceful language, have been made even more clear and profound in Nyaya-vinishchaya-vivarana by Vadiraja Suri through his language and style of reasoning. Prof. Mahendra Kumar Jain Nyayacharya, eminent scholar of this century of Jaina philosophy and logic, has edited this work with great skill and care.
The whole work is composed in two parts. Its first part was published by Bharatiya Jnanpith in 1949 and the second part in 1955. Out of print for a long while, its unavailability was being felt in the field of logic. We at Bharatiya Jnanpith are happy that we are now publishing a new edition of this invaluable treasure of Jaina literature in a new getup and presenting it to scholarly students of logic.