vyāpti
अवच्छेदकत्वनिरुक्ति: (Avacchedakattvaniruktiḥ)
In this book, Jagadīśa offers commentary on the nature of vyāpti as mentioned by Raghunatha Śiromaṇī in his Didhīti. Jagadīśa talks about two kinds of vyāpakatva in great detail. In this context, Jagadīśa alludes to the concept of avacchedakata and explains these allaying all the possible questions that one could raise in this context.
क्रोड्पत्त्रसंग्रहः (Krodapattrasangraha or Critical Notes)
This book is a collection of short essays by Kāliśankara Siddhāntavāgīsa on different issues in Navya-Nyāya. The essays in the present collection include discourses on Gadādhara’s theory of Prāmāṇya, 2. Gadādhara’s theory of Anumāna, 3. On Vyāptipañcaka, 4. On Siṅhavyāghralakṣaṇa, 5. Gadādhara’s theory of Vyādhikaraṇa, 6. On the Siddhāntalakṣaṇa, 7. Gadādhara’s theory of Anugama of Vyāpti, 8. Gadādhara’s theory of Pakṣatā, 10. Gadādhara’s theory of Avayava, 11. Gadādhara’s theory of Sāmānyanirukti, 12. On Savyabhicara, 13. On Sādharaṇa, 14. On Asādharaṇa and 15. On Satpratipakṣa.
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.
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.