All present day advaitins trace their guru-parampara through the four principal disciples of SrI SankarAcArya. These disciples were the first leaders of the four AmnAya maThas (monasteries) at Puri (Govardhan Math, Puri 752 001, Orissa) Sringeri (Sri Sarada Peetham, Sringeri 577 139, Karnataka), Dvaraka (Dvaraka Peeth, Dvaraka 361 335, Gujarat ) and Badrinath (Sri Sankaracharya Math, Joshimath, Badri 246 443, Uttar Pradesh). All four maThas are functioning today.

Full Article: What are the advaita institutions of the present day?