The Padārthatattva-Nirūpaṇam (পদার্থতত্বনিরুপনম)

The present book, written by Raghunātha Śiramaṇi and translated and explained in Bengali by Madhusudan Bhattacharya,  is an attempt to present his views on the metaphysical categories generally accepted in the Nyāya-Vaiśeṣika tradition. Raghunātha, of course, refutes some of the categories accepted by earlier Nyāya-Vaiśeṣika philosophy. He even does not hesitate to accept some of the views of the Mīmāṁsā philosophy, thereby going against his own tradition.

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.

शब्दशक्तिप्रकाशिका (Śabdaśaktiprakāśikā (Vol-1))

Śabdaśaktiprakāśikā is an important text written by Jagadīśa Tarkālaṃkāra containing an analysis of śabda pramāna following the Navya-Nyāya tradition. This work is a defence of many of the theses of Gaṅgeśa, the author of Tattvacintāmaṇi. In many places, the views of Bhatṛhari and Srīpatidatta, the author of Kalapa-pariśiṣta, have been critically assessed and defended. The author offers a detailed analysis of how the knowledge of the meaning of a sentence is generated through the presence of the elements like ākāṁṣkā, yogyatā and āsatti. Since the meaning of a word is defined in terms of śakti, a question arises with regard to the locus of śakti. Bhāṭṭa Mīmāṁsakas hold that śakti stays in the universal. Jagadīśa refutes this thesis of the Mīmāṁsakas. The author also refutes the thesis that the locus of śakti is the individual object, a view that is propagated by Raghunātha Śiromaṇi. Jagadīśa defends the view that combines both the insights that the locus of śakti is the individual object and the locus of śakti is the universal. In this book, Jagadīśa presents an analysis of the nature of lakṣanā. In this work we also find an analysis of how ākaṁkṣā, yogyatā and āsatti could be treated as the cause of understanding the meaning of a sentence. Jagadīśa, however, refutes the view that the knowledge of tātparya is the cause of understanding the meaning of a sentence, instead proposes the view that prakaraṇajñāna is the cause of understanding the meaning of a sentence. Thus in the present work the author, after defending śabdapramāṇa as an independent pramāṇa, offers his analysis of the ways of generating linguistic understanding.

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.

ध्ब्मसजन्यभावयो: कार्यकारणभावरहस्यम् (Dhvaṃsa- Janyabhāvayoḥ Kārya-Kāraṇabhāvarahasyam)

In this essay, Harirama Tarkavagisa undertakes an analysis of the nature of the causal relationship between a positive effect and destruction. The author examines the nature of the inference viz. Dhvaṃsa is due to vināśa. If one takes into consideration this inference, there must be a hetu here and the hetu could be said to have an upadhi viz. Bhāvatva. Harirama, in this context, presents different ways of formulating the causal relation. The author ends this essay by concluding that the positive effect (janyabhāva) could be said to be the cause of destruction (dhvaṃsa) through the relation of pratiyogitva.

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.