Gadādhara’s Theory of Objectivity Viṣayatāvāda (Part-Two)

In this book, Sibajiban Bhattacharyya offers a detailed analysis of the text called Viṣayatāvāda, written by Gadādhara. After explaining the traditional Navya-Nyāya theory of objectivity, the author presents the later Navya-Nyāya theory of objecthood where it has been argued that objecthood cannot be cognition itself. Gadādhara’s theory of relation has been analyzed in terms of objecthood of qualified cognition. A detailed analysis of the ideas of qualificandness, qualificandumness, predicatehood could be found in this book.

सिद्धान्तलक्षणम् (Siddhānta Lakṣaṇam)

The final definition of vyāpti, known as siddhāntalakṣaṇa, has been explained by Jagadīśa in this work. The final definition of vyāpti is: where pratiyogyasāmānadhikaraṇya tāsāmānādhikaraṇatyantābhāvāpratiyogitāvacchedakabhacchinam does not hold, their vyāpti stays in the same locus. Raghunātha Śiromaṇi comments on this definition of vyāpti. Jagadīṣa further explains this final definition of vyāpti.

বাঙালির সারস্বত অবদান: বঙ্গে নব্যন্যায়চর্চা (Bangalir Saraswat Avadan: Bange Navyanyaya Charcha)

This is perhaps the most authentic history of Navya-Nyāya scholarship in Bengal with special emphasis on Navadvipa. In this book, the author presents a detailed description of the biographies and the works of the philosophers of Navadvipa. The author divides his work in the following chapters: 1. The Pre-Śiromaṇī age, 2.Raghunātha Śiromaṇī, 3. Bengali Commentators on Śiromaṇī, 4. The Post-Gadādhara Era, 5. Bengali Naiyāyikas in Kāśidhāma, 6. Nyaya Schools of Bengal. The author, with sufficient historical evidence, determines the time of many of the Navya-Nyāya scholars and he also proposes his views on the authorship of many of the Navya-Nyāya commentaries.

जागदीशीव्याधिकरणम् (Jāgadīśvyādhikaraṇam)

This is a prakaraṇa text on the Nyāya theory of vyāpti written by Jagadīśa. The main theme of the work centres around the nature of vyāpti.Knowledge of vyāpti is the cause of inferential knowledge. If the definition of vyāpti is constructed in terms of avyābhicāritatva, then one could explain  avyābhicāritatva in five alternative ways. And none of these alternatives is acceptable, for this understanding of vyāpti would fail to account for kevalānvayi inference. In order to remove this problem, the definition of vyāpti is reconstructed as pratiyogivṛttidharmāvacchinna-pratiyogitākabhāvarupa vyādhikaraṇadharmāvacchinnabhāva. Jagadīśa examines this new definition of vyāpti and offers his justification, refuting all the possible objections.

पक्षताप्रकरणम् (Pakṣtā Prakaraṇam)

In this book Jagadśa undertakes a study of the concept of pakṣatā. Pakṣatā is regarded as the cause of inference. Some define pakṣatā as sādhyasaṃśaya. Some others define pakṣatā as siṣādhayiṣāvirahaviśiṣtasiddhyabhāvaḥ. A detailed analysis of all these issues has been done by the author in this book.

शब्दशक्तिप्रकाशिका (Śabdśaktiprakāśikā)

Śabdaśaktiprakāśikā contains six chapters: 1. Nāmaprakaraṇa, 2. Samāsaprakaraṇa, 3. Supvibhaktiprakaraṇa, 4. Kārakaprakaraṇa, 5. Akhyātaprakaraṇa, 6. Taddhitaprakaraṇa.  The present volume contains two commentaries on Śabdaśaktiprakāśikā viz. . Kriśnakānti commentary by Krisnakānta Vidyāvāgīśa and Pravbodhinī commentary by Rāmabhadra Siddhāntavāgīśa.