the Nyāya On Existence, Knowability and Nameability *

According to the Nyāya ¹ existence (astitva), knowability (jñeyatva), and nameability (abhidheyatva) are considered as universal properties. All the categories of the Nyāya—Vaiśeṣika system including absence (abhāva) are said to have these three properties. In contemporary Western philosophy also, the problem of existence including the problem of identity occupies some logicians. The Nyāya view on such related topics might shed some light.