Paramatman

For example, the main thought of the Upanishads is that the entire universe is derived from a single, changeless, eternal, infinite, being, called Brahman or Paramatman.

Nothing exists except the one existence called Brahman or Paramâtman, the Highest Self.

The second part deals with the three ideal maṭhs, Sumeru, Paramâtman and Śâstrâthajnâna.

������ in Sa@nkara's opinion the Upanishads teach, is shortly as follows.—������ever is, is in reality one; there truly exists only one universal being called Brahman or Paramâtman, the highest Self.

Bhutanam etc. is explained by Nilakantha as no swasya, and the vocative vibho is taken as Paramatman.