Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Udayana also known as ''Udayan c rya'' (Udyanacharya, or "Master Udayana) lived in the 10th century, in Mithila, near present day Darbhanga, Bihar state, India. Udayana was a very important Hindu logician who attempted to reconcile the views held by the two major schools of logic out of which developed the Navya Ny ya ( New Ny ya ) school of right reasoning, which is still recognized and followed in some regions of India.