---
type: Reference
bundle: nyaya-vaisheshika
bundle_version: 0.9.0
id: tattvacintamani
title: Tattvacintāmaṇi (Gaṅgeśa)
description: Gaṅgeśa's founding text of Navya-Nyāya ('new logic'), which rebuilt the theory of inference and cognition with a rigorous technical vocabulary; cited here as the marker for the Navya-Nyāya layer deferred to a future bundle.
tags:
- reference
- tattvacintamani
- gangesha
- navya-nyaya
- deferral
timestamp: '2026-07-02'
okf_version: '0.2'
license: CC BY-SA 4.0
---

# Tattvacintāmaṇi (Gaṅgeśa)

The Tattvacintāmaṇi of Gaṅgeśa Upādhyāya (c. 13th-14th century CE) founds Navya-Nyāya, the 'new logic', reorganising the whole system around the four pramāṇas and developing an extraordinarily precise technical language for relations, negation, and the conditions of pervasion (vyāpti), the language later refined by Raghunātha Śiromaṇi and Gadādhara. This bundle treats classical Nyāya-Vaiśeṣika and cites the Tattvacintāmaṇi for the classical analysis of vyāpti; the distinctive Navya-Nyāya apparatus (avacchedaka / limiting relations and the rest) is a named-and-deferred layer, reserved for a dedicated future bundle rather than compressed into this one. It is the strongest single refutation of the old claim that India lacked a rigorous formal logic, and it deserves its own treatment.
