Ashta Mathas of Udupi

The Ashta Mathas of Udupi are a group of eight mathas or Hindu monasteries established by Madhvacharya, the preceptor of the Dvaita school of Hindu thought. For each of the eight mathas, Madhvacharya also appointed one of his direct disciples to be the first Swami, head of the matha.

The ashta mathas are named after the villages in which they were originally located. Today, the mathas are situated in the temple town of Udupi. The mathas work to propagate the Dvaita philosophy. They also administer the famous Udupi Krishna Temple by way of a formal rotation scheme called Paryaya.

When the ashta mathas were formed, Sri Madhvacharya initiated the Swamijis of the mathas in pairs. Each pair of mathas is called Dwandva (literally, two or dual). In the event the current Paryaya Swamiji has difficulty performing his duties, the Swamiji from the Dwandwa matha takes over the responsibility. The four pairs of mathas are: Palimaru and Adamaru; Krishnapura and Puttige; Shirur and Sodhe; and Kaniyooru and Pejavara.

...
Wikipedia