Udayanaachaarya, Udayanacharya or Udayakara, a Brahmana logician of Mithila wrote a sub-gloss on Vachaspati's work called the Nyaya-vaartika-taatparya-tiikaa-parishuddhi. He wrote several other works such as the Kusumanjali, Atma-tattva-viveka, Kiranaavali and Nyaya-parishishhta (also called Bodha siddhi or Bodha shuddhi).

UdayanAchArya (a "tArkika-n") and Kumarilabhatta (a "mImAmsaka-n"). To the "mImAmsakA-s" the Buddhist's summary rejection of Vedic ritualism was the proverbial red rag waved under the nose of a raging bull !Kumarilabhatta, it can be seen, has written copiously criticising the Buddhist's distaste for Vedic ritualism। He and UdayanAchArya were chiefly responsible for the failure of Buddhism to acquire a large following in the country(Scholars mention here the texts of "tarkapAdam" of Kumarilabhatta and the "bauddhadhikAram" by UdayanAchAryA).

Udayanaachazrya was a Hindu philosopher and Nyaya-vaartika scholar from Mithila (Now North Bihar

Bihar

Bihar is a state in eastern India. It is the 12th largest state in terms of geographical size at and 3rd largest by population. Almost 58% of Biharis are below the age of 25, which is the highest proportion in India....

). Little is known about his biography, but he is famous for many of his seminal theses on Nyaya-vaartik and debate on buddhism and Vedic rituals. His birthplace is a village Kariyan in the modern Samastipur

Samastipur

Samastipur is a city and a municipality in Samastipur district in the Indian state of Bihar. It is headquarters of the Samastipur district.It is situated on the banks of Burhi Gandak River.-Demographics:...

district of Bihar.