A previously unknown 10th-century manuscript of the Tarka-Bhasha, a seminal work on Indian logic (Nyaya), has been identified in a private collection in Darbhanga, Bihar. This version contains extensive marginalia by a local scholar, providing an early critique of the syllogistic methods used by competing philosophical schools of the time.
The discovery is significant for historians of philosophy as it demonstrates the continuity of the Mithila school of logic far earlier than previously documented. The annotations provide a missing link in the evolution of Navya-Nyaya, the 'New Logic' that would later dominate Indian intellectual life for centuries.